US1767926A - Nailing tool - Google Patents

Description

J 1930. -J. E. HOFFMAN 1 1,767,926

MAILING TOOL Filed July 11, 1929 3 Sheets-Sheet 2 June 24, 1930. J. E. HJOFFMAN I 1,767,926

NAILING TOOL Filegl gui 11, 1929 s Shets-Sheet a I hammer,

Patented June 24, 193% stars JOHN E. HOFFMAN, OF CASFEB, WYOMING NAILING TOOL Application filed July 11,

This invention relates to a tool designed for nailing and used by carpenters, other mechanics or even unskilled persons and it particularly aims to provide a construc ion 5 adapted for overhead work and one which may be loaded at any angle.

It is further aimed to provi le a novel construction or vmagazine mechanism or ieeding' mechanism in combination with a as 'will be hereinafter specifically described with relation to drawings illustrating the same, and then claimed. v

Additional objects and advantageswill become apparent from a consideration of the said description and drawings.' In said drawings Figure 1 is a view of the device in elevation, being partly broken away to disclose details,

Figure Figure is a cross sectional view taken on the line 33 of Figure 1, I

Figure 4t is a vertical sectional view taken on the line 4 4 of Figure 2 2 is aplan view of the device,

on the line 5-5'of Figure 2,

Figure 6 is a sectional view line 6-6 of Figure 1, v

Figure 7 is a detail vertical sectional view through the magazine-operating knob,

Figure 8 is an elevation of the magazine, and p Figure 9 is a sectional view taken on the line 9-9 of Figure 5.

Referring specifically to the drawings an elongated barrel is shown at 10 which is adapted to receive nails 11 in thereof through a feed opening 13 in the barrel. Such nails are adapted to be driven by a knob 1 1 forming a reduced portion of a plunger or hammer 15. Such hammer has an enlargement 16 which is normally housed in an enlargement 17 of the barrel 1(). Projections 18 on the enlargement 15 slide in grooves 19 of the enlargement 17 whereby the hammer does not turn incidental to reciprocation thereof. T he enlargement 16 may have a head 20 at its upper end and the enlargement 17 may have a cap 21 screwed to its upper end, and through which the entaken on the hinged thereto at loops of the strip.

Figure 5 is a vertical sectional View taken the bore 12 1929. Serial No. 377,435.

largement 16 passes. "At the base of the enlargement 17, ports 92 may be provided for he release of trapped air. Carried by the barrel 10 is a casing 23 which is provided with an oiiset portion 2 from the top of which-an integral attaching collar extends which is detachably screw threaded at 26 to the enlarged portionl'? of the barrel. A rubber grip or sleeve 2'7 may surround the barrel 10 below the casing 23. The upper end of the casing 23 is provided with a closure 28. which is 29 and normally held closed by a winged screw at 30. i

Rigid with the bottom wall. of the casing 23 and arranged exteriorly of such casing a post 31 around whicha strip or ribbon of paper 32 adapted to be wrapped and which strip at intervals carries the aforesaid nails 11, the same being secured in The screw is threaded into the post 31 at the 'top ofthe latter. Journaled freely about the lower portion 10'of the barrel is a feed magazine 3% generally of cylindrical form as detailed in Figure 8. Such magazine is adapted to turn on the barrel with minimum friction to which end ball bearings 35 are interposed between the same as shown in Figure l Such barrel has upper solid portions or. $0 collars 36: and '37, from which equidistantly spaced cams 3'8 and 39, respectively extend outwardly. Intermediate the collars 36 and 37, the magazine consists of bars, &0-, equidistantly spaced apart, providing equidis. 35 tantly spaced nail receiving slots 11, enlarged at their upper ends as at 12, to accord with the head of the nail.

Within the casing adjacent the magazine, a guide roller a?) is journaled on a vertical. axis and strip 32 is guided between the same and the magazine,-and thence passes out of the casing through an opening L4 in the enlargement 2 1. It will be seen that the nails 11 are spaced the same distance apart as 5 the slots a1 and hence the nails enter the slots ll as the strip 39. passes over the magazine, and is moved through the rotation of the magazine. The slots 411, successively come into registration with the slot 13, so

' zine, that is 7 manual movement of the that the nails may at the desired time pass nto the bore 12, the same rupturing the loops 33 as they pass from the slots 41 through the slot 13 into said bore.

Means is provided to operate the magato turn it step by step, in an arc, the distance between adjacentslots 41, and accordingly feed the nails successively into registration with the slot 13. Tothis end, a longitudinally movable knob device is provided at 45 consisting of a knob 46, and a housing 47, the latter having ribs 48 which are movable in slots 49 provided in a keeper plate 50 fastened to the enlargement 24, such plate and enlargement having registering slots 51 accommodating longitudinal movement of the housing 47.

In the housing 47 a disk'52 is eccentrically pivoted to a pin 53. A nail feeding frame 54 has a portion disposed in the housing 47 and provided with a round slot 55 occupied by the disk 52., Such portion 55 has a guide stud 56 which is slidably disposed in a recess 57 of the knob 46 and which is normally urged inwardly through the action of an expansive spring 58 housed in said recess 57.

As a result of the construction described, the knob 46 and parts carried thereby is adapted to be reciprocated longitudinally of the tool and when between the extremes of its movement, the spring 58 maintains the feeding device. 54 in engagement with the adjacent nail 11 and immediate portion of the strip carrying the same whereby the nail is thrust by the'spring 58 into the bore of the barrel, when theslot 41 carrying such nail registers with the slot 18. The knob 46 from that position in either direction, due to the ,rovision of the eccentric disk 52, retracts the member 54 and moves it into engagement with a cam 38 or 39 according to the direction of movement, thus rotating the magazine one slot, and positioning the succeeding nail opposite the slot 13. The nail which is supplied into the bore of the barrel is adapted to be driven through the operation of the hammer 15 as will be understood.

' After the device 54 engages one of the cams 38 or 39 and has placed the succeeding nail 11 in place, the knob 46 is moved toward the position of Figure 5 where the spring 58 and device 54 will again feed a nail into the bore of the barrel. The rotation of the magazine thus occurs a notch 41 at a time, at eachextreme of movement of the knob device 45 and the feed of the nail occurs each assumes a position between the extremities of its movement.

Various changes may be resorted to provided they fall within the spirit and scope of the invention.

lVhat is claimed is 1. A nailing tool including a barrel, a

hammer operable in the barrel, a casing through which the barrel passes, interengaging screw threads connecting the barrel and easing together, means to feed nails from the casing into the barrel in the path of operation ofthe hammer, a post in the casing rising from the bottom thereof, a closure for the casing, fastening securing the closure to said post, said post serving as a means around which a strip containing nails'may be wrapped, a nail feed magazine journaled on the barrel, and guide means in the casing for the strip located relatively close to the magazine. I

2. A nailing tool including a barrel, a hammer operable in the barrel, a casing through which the barrel passes, interengaging screw threads connecting the barrel and easing together, means to feed nails from the casinginto the barrel in the path of operation of the hammer, a post in the casmg rising from the bottom thereof, a closure for the casing, a fastening securing the closure to said 1005-), said post serving as a means around whicha strip containing nails may be wrapped, a nail feed magazine journaled on. the barrel, guide means in the easing for the strip located relatively'close to the magazine, cam means on the magazine, and means operable on the casing engage- V cam means to effect rotation of the magazine.

3. A nailing, device'con'iprising a barrel adapted to receive nails, a hammer to drive the nails operable in the through which the barrel passes, said casing adapted to abut the barrel and having an integral collar screw threaded to the barrel, thereby connecting the barrel and casing together, a nail magazine in the casing engag ing the upper and lower walls thereof and :ournaled on that portion of the barrel eX- tending therethrough, means for holding a strip containing nails in operative relation to the magazine, and means mounted on the casing operable to rotate the magazine step by step. I V

A nailing device of the class described comprising a barrel, said barrel having a nail feed slot, a magazine journaled on the barrel having slots through which nails are barrel, a casing fed in succession to the first mentioned slot,

' means operable to rotate the magazine a slot at a time comprising a device movable longiprojection and retraction of said tudinally of the barrel, said device including a nail feeding member, means for causing protection and retraction of said member for the purpose specified comprising a disk mounted eccentrically on said device, said member having an opening occupied by said disk, and an expansive spring engaging said member.

In testimony whereof I aflix my signature.

JOHN E. HOFFMAN.

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