US2510820A - Beveling device - Google Patents

Description

June 6, 1950 E. A. HERMANSON 2,510,820

BEVELING DEVICE Filed Nov. 19, 1947 2 Sheets-Sheet 2 Fig .21.

- E 55 INVENTORQ 56 Eg /ard A0 Herm anson F1. 5 Afforney Patented June 6, 1950 UNITED STATES PATENT- OFFICE BEVELING DEVICE Edward Almer Hermanson, Santa Monica, Calif. Application November 19, 1947, Serial No. 786,978

Claims. (01. 90-15) 1 7 My invention relates to beveling devices and more particularly to a beveling device especially adapted to bevel the end edge surfaces of bars forming frames used for the purpose of holding together the set type of advertisements and short items prepared in printing offices. It is, however, to be understood that the beveling device according to my invention may be used also for beveling the end surfaces of abutting members of frames used for other purposes.

The object of my invention is to provide a beveling device of the character indicated above, which is adapted, in addition to the beveling-of the abutting end surfaces of adjoining frame members, to form interlocking dovetail grooves and dovetail tenons on'said abutting end surfaces, so that the bars forming small compositor frames may be securely held together. 7

Other objects of my invention not specifically mentioned may appear in the followingspecification describing my invention with reference to the accompanying drawing illustrating a preferred embodiment of my invention; It is,"however, to be understood, that my invention is 'not to be limited or restricted to the exact construction and combination of parts described in the specification and shown in the drawing, but that such changes and modifications can be made, which fall within the scope of the claims appended hereto. 1

In the several figures of the drawing illustrating my invention similar parts are designated by similar reference characters, and

Figure 1 is an elevational side view of the beveling device according to my invention.

Figure 2 is an elevational' right hand end view of Figure. 1.,

Figure 3 is a sectional view taken on line 33 inFigurel. A w

Figure 4 is a sectional view taken on line 4-4 in Figure 1.

. Figure 5 is a detail view of the motor and the beveling mechanism partly shown in elevation and partly in section.

Figure 6 is a sectional view taken on line 66. in Figure 5.

Figure 7 is a fragmentary perspective view of a frame member provided, with a beveled end surface on which a dovetail tenon is formed, and

Figure 8 is a fragmentary perspective view of a frame member provided with a beveled end surface, in which a dovetail groove is cut.

The beveling device forming the subject matter of my invention comprises a, track-member II] Q end portion II of which is reduced in thickness of substantially rectangular cross section, one

and forms the base of a milling mechanism M to be described later. At an equal distance below the top surface of the track-member Ill a longitudinal dovetail groove I2 is arranged in each longitudinal side of said member and runs parallel to the top surface of the track member. A clamp I3 is shaped substantially like an inverted U and the flanges Isa of said clamp fit slidably on the longitudinal sides of the track-member II]. On the inside surface of each clamp flange I3a, a, dovetail tenon I4 is formed adapted to engage slidably the corresponding dovetail groove I 2. In the inside surface of the web I3b of the clamp I3, a comparatively wide and shallow rectangular groove I5 is formed, adapted to receive a flat frame member I6 therein. Centrally of the web I3b of the clamp I3, a tapped hole I! is located and a thumb screw I8 engages said tapped hole and is adapted to secure the flat frame member I6 in adjusted position.

A small electric motor I9 or the like forms a part of the mechanism M and is mounted on the outer end of the base I I of said mechanism.

' A housing 20 having a rectangular cross section is mounted on the base I I intermediate the track I0 and the motor I9. The motor shaft '2I extends through the rear end wall 20a of the housing on the vertical center line thereof and is rotatably supported by a bearing 22 secured on the inside surface of said wall. On the end of the motor shaft 2I, a universal joint 23 is rigidly mounted and a milling spindle 24 is secured to the other end of the universal joint by means of a square shaft portion 25. The milling spindle 24 extends through a vertical slot 26. provided in the front end wall 201) and a milling cutter c is removably secured to the front end of the spindle. The milling cutter is formed with a milling face 21 and a milling circumferential surface 28, which extends rearwardly from the face at an angle of 45.

A pulley 29 is rigidly mounted on the motor shaft 2| between the motor I9 and the housing 20, and two stub shafts 30 extend through the rear wall 200, of the housing 20 and are rotatably mounted in bearings 3| arranged on the inner surface of the rear housing wall at an equal distance from the vertical center line of said Wall and at a higher level than the first mentioned bearing 22. On the outer end of each stub shaft 30, a pulley 32 is rigidly mounted and an endless belt 33 is trained over the three pulleys 29Aan'd 32. Inside the housing 20 a universal joint. 34 is secured to the end of each stub shaft 3Iland a milling spindle 35 is attached to each universal joint and extends through a vertical slot 36 in the front end wall 2012. Outside of the housing 20 another milling cutter c is removably secured onto the end of each milling spindle 35. These milling cutters are formed identically with the first milling cutter c.

On the base end portion ll of the track-memher [0, an upwardly extending bracket 31 is mounted inside the housing 20 and supports a crank lever L pivotally' on a pivot pin 38 extending horizontally through said bracket. One arm 39 of said crank lever extends slantingly upward and the other arm 49 extends through a vertical slot 4| in a side wall of the housing 20. The

upwardly extending lever arm 38 is provided with a, longitudinal slot 42. A. sleeve 43 surrounds slidably the first mentioned milling spindle and has a downwardly extending lever arm 4%: which is connected with the upward lever arm 39 by means of a. pivot pin- 45 secured in the-lever arm 44 and located slidably in the slot 42 in the upwardly slanting lever arm 39'. Normally the milling. splindle 24 swings; downwardly on the universal. joint 23 by gravitation into the position indicated in Figure 5 in broken lines, thereby urging the outwardly extending lever arm to upwardly. By forcing this lever arm down, the milling spindle is pivoted upwardly in the position shownin. full lines in Figure 5 for a purpose tobe describedlater.

Each upper milling spindle 35 is surrounded slidably by a sleeve 46 located inside the housin 20' and these two sleeves are connected with each other by means of a, bar W or the like provided with a downwardly extending; arm 43. A. con necting bar 49 is pivotally' connected at. its upper endwith. the arm 4.8, as at 50 in Figure 5, and has a pivot: pin 5|. in. its lower end portion. This. pin extends through a vertical slot 52in the side wall of the housing, in which the slot ti is ar ranged. Vertically underneath of the. slot 52, two guide. rings 53 are secured to said housing wall. at. adistance from. said slot and from each other; An adjusting rod 54 is located slidably in the. two. guide rings 53 and the pivot pin 5! extends pivotally diametrically through. the upper end portion of said adjusting rod. Directly underneath. the guide ringsv 53 a small guide bracket 55. projectsfrom the base portion H of the track-member l and a bore 55 extends coaxially with the guide rings-5.3 through said guide bracket and. the lower end portion; of; the adjusting rod is located slidably in said bore. A helical spring 51 surrounds the portion of. theadiusting rod underneath the lower guide ring; 53 and abuts with its lower end. a washer 58 resting" on. the guide bracket 55, and with its upper end a pin- 59 extending diametrically through the adjusting rod 6 under the lower guide ring, normally urging the adjusting rod upwardly, so that the two milling spindles 35 will be normally located in the position shown in full lines in Figure 5. A hand grip 60 is secured. to the adjusting rod 54 between the two guide rings 53, and by forcing the; handgrip down. the two milling spindles 35 and the cuttersc secured thereon are pivoted down into the: position shown in broken. lines in Figure 5. Upon release of the hand grip the spring 51. returns. the spindles and cutters into normalposition.

The above described device operates; as follows:

A flat piece 1.8 of metal is placed. on. the; track.- member. t0. and adjusted to extend a certain length beyond the track and over the base II. The clamp l3 holds the flat bar l8 in adjusted position. The motor I9 is started, and the handgrip is forced down, so that the two spindles 35 and. the milling cutters c On said spindles are pivoted downwardly into working position shown in broken lines in Figure 5. The milling cutters engage the metal bar IS with the milling surfaces 28 so that the bar end portions 6| adjacent to the longitudinal edges of said bar are beveled at anangle of 45. Then the handgrip is released and the milling spindles 35 with their milling cutters are returned to idle position as shown in full lines in Figure 5. The clamp I3 is released and the flat metal bar is adjusted in desired position, and the crank lever L is actuated to lift the milling spindle 24 into horizontal working position shown in full lines in Figur 5, so that the flat milling face 2'! of the milling cutter secured tothe spindle 25 will face the bar end surface portion 62 left between the two beveled portions 6|, This portion 62 has beveled side surfaces 63, forming a dovetail tenon 52 because the two milling surfaces 28 and 28 of eachmilling cutter extend to each other at. an angle of 45. Both ends of a flat bar l6 are finished in this manner, and then the ends of another bar l6 arefinishedas follows:

The bar I-B. is adjusted on the: track-member l0 and secured in position. The. bar end por tions adjacent the longitudinal. edges of said bar are beveled by means of the. two mil-ling cutters c on the milling spindles 35, as described above. The bar I6 is adjusted again, so'that the milling cutter: on the milling spindle 24 will euta dovetailgroove 64- into the bar end between the beveled end, portions 6| when it is arranged in working position. The dovetail tenon 62 fits snugl into the dovetail groove 64,,

Two bars [6. are provided. with dovetail tenons 62 at each: end and, two other barswith dovetail grooves 64 and the bar end. portions adjacent. to said tenons: and grooves are beveled, so that these bars can be easily assembled to form a frame...

The. housing 20 is closed by a cap 65' fitting into the housingand" resting on the upper edges of the housing walls.

I claim:

1. A device for beveling the ends of bars de signed to form compositor frames or the like including an elongated track member adapted to support a frame bar, a milling mechanism mounted at one end of said track member, means for securing said frame bar on the track memher so that it extends a. selected predetermined distance beyond the said track end, the milling mechanism comprising a motor, a motor shaft, a universal joint on said shaft, a milling spindle, a milling cutter removably secured on said milling spindle, said spindle being adapted to pivot downwardly by gravitation into idle position, and means for lifting said spindle into hori zontal working position, said means consisting ofa sleeve rotatably mounted on the spindle, a downwardly extending arm formed on the sleeve, a pivot pin on the arm adjacent: to its end, and a crank lever pivotal'ly mounted at the track. end, one arm of said lever extending slantingly upward: and provided with a longitudinal. slot, in. which the pivot is slidably lo cated and the other lever arm extending rearwardly, so that the spindle maybe pivoted upwardly into; horizontal: working position by push ingtheseccndlever arm down.

2, A device for beveling the ends of bars designed to form compositor frames or the like including an elongated track member adapted to support a frame bar, a milling mechanism mounted at one end of said track member, means for securing said frame bar on the track member so that it extends a selected prede termined distance beyond the said track end, the milling mechanism comprising a motor, a motor shaft, a pulley on said shaft, a housing mounted in front of the motor, two stub shafts rotatably supported in the rear wall of the housing and located at a higherlevel than the motor shaft, a pulley rigidly mounted on the outer end portion of each stub shaft, an endless belt trained over the three pulleys, a universal joint inside the housing on the end of each stub shaft, a milling spindle connected with each universal joint and extending through a vertical slot in the front wall of the housing, a. milling cutter removably mounted on the free end of each milling spindle, and means for holding the spindles and cutters normally in upward idle position.

3. A device for beveling the ends of bars designed to form compositor frames or the like including an elongated track member adapted to support a frame bar, a milling mechanism mounted at one end of said track member, means for securing said frame bar on the track member, so that it extends a selected predetermined distance beyond the said track end, the milling mechanism comprising a motor, a motor shaft, a pulley on said shaft, a housing mounted in front of the motor, two stub shafts rotatably supported in the rear wall of the housing and located at a higher level than the motor shaft, a pulley rigidly mounted on the outer end portion of each stub shaft, an endless belt trained over the three pulleys, a universal joint inside the housing on the end of each stub shaft,

a millin spindle connected with each universal joint and extending through a vertical slot in the front wall of the housing, a milling cutter removably mounted on the free end of each milling spindle, means for holding the spindles and cutters normally in upward idle position, said means comprising a bar or the like connecting the spindles, an arm on said bar, a connecting bar pivotally mounted with one of its end portions onto the arm, a pivot pin extending through the other end portion of the connecting bar, through a vertical slot in the rear housing wall and extending diametrically through an adjusting rod slidably arranged in guide rings mounted above each other on the outside of said rear wall, a spring adapted to urge the adjusting rod upwardly to pivot the spindles and cutters into idle position, and Ia, hand grip or the like secured on the adjusting rod to facilitate the imparting of downward sliding movement to said rod.

4. A device for beveling and forming dovetail elements on the ends of bars designed to form compositor frames or the like, comprising a work bed for supporting a frame bar, a milling cutter,

a spindle carrying the cutter and pivotally supported at one end to be vertically swung to a position in which its turning axis is substantially in line with the end of a bar on the bed, means for swinging the cutter vertically into and out of said position, a pair of milling cutters, spindles supporting the latter for vertical swinging movement across the said end of the bar in vertical planes passing on the two sides of the swinging plane for the first spindle, means for swinging the pair of spindles, and means for rotating the cutters.

5. A device as set forth in claim 4 in which each milling cutter'is of conical form and joined at its apex to the end of its supporting spindle, and the pair of cutters being supported above the work bed and swinging about a center located at substantial height above the swinging center for the first cutter.

EDWARD ALMER HERMANSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 121,278 Davis NOV. 28, 1871 147,554 Elliot Feb. 17, 1874 350,575 Bell Oct. 12, 1886 1,906,876 Christopherson May 2, 1933 FOREIGN PATENTS Number Country Date 76,584 Switzerland Jan. 16, 1918 381,003 Great Britain Sept. 29, 1932

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