US1676311A - Cross-rail guard - Google Patents

Description

July 10, 1928. 1,676,311

w. F. ZIMMERMANN CROSS RAIL GUARD Filed March 27, 1925 wue wtoz Patented July 10, 1928. p

1,676,311 UNITED STATES, PATENT OFFICE.-

wimmur r. zmmnamauu, or mArLEwoon, New JERSEY, ASSIGNOR To, GOULD a nnnnnennr, or NEWARK, NEW JERSEY, A CORPORATION 01 NEW JEBsnYi CROSS-RAIL GUARD.

Application filed March 27, 1925. serlal li'oildflsli.

My invention is concerned with means for protecting the guiding and bearing surfaces on a shaping machine from dirt, chips or other foreign material, and is chiefly 0011-,

" guard member to prevent any chips or dirt 6 cerned with means for protecting the's'urfaces of engagement between the cross head and the main frame and between the work-. r

. mam frame of the machine. The end flanges of the guard member arecut away near the table saddleand the cross head.

In' shaping machines, as now constructed,

10 a reciprocatmg ram, which is mounted on the main frame of the machine, carries a cutting tool. A work table, which is mounted on a saddle below the cutting tool, is movable in a horizontal direction alon a cross head. The cross head is movable in a vertical direction along the main frame of the machine. e chips, which are scattered over the table saddle and the cross head by the cutting tool,are not only liable to injure the surfaces of engagement between the table saddle, thecross head and the main frame but are'liable to displace the position of the cross head with respect to the main frame. When the cross head is unclamped from the frame to effect vertical movement thereof, an open space is generally formed between the upper edge of the cross head and the 4 main frame by reason of the action of the weight of the table and the cross head. If dirt or chips fall into the open space thus formed between the cross head and the frame it is difficult to clamp the cross head back into position without injury to the surfaces of engagement between the head and the frame.

One of the chief objects of my invention is to provide a guard member that shall insure against chips or dirt coming in contact with the surfaces of engagement between the table saddle, the cross head, and the main frame. The guard member also serves to protect the operating mechanism for. the

saddle and the cross head against chips and dirt. A guard member, which is preferably 5 composed of sheet metal, is secured to the top of the cross head in position to extend over a portion of the work-table saddle. The guard member not only extends over a portion of the table saddle and over the cross head but also projects a short distance over each end of the cross head. The front and end ed es of the guard member are bent upward y to form flanges of very short height and the rear edge of the guard mem her is bent upwardly to form a much higher flange. The rear' flange is positioned adjacent tothe frame of the machine and cooperates with the horizontal surface of the coming into contact with the surfaces of engagement between the cross head and the front edge of the member in order. to permit the removalof the chips which have been collected on top of the uard member.

Near the front of the guar member is 'secured a yieldable means which engages the 1 top of the table.

to the guard member. The strip'of leather serves to prevent the passing of any 'chips,

and dirt under the guard member to; irijure the above mentioned surfaces of engagep I r Other objects and advantages will be in ment.

The yieldable .means is preferably a strip of leather which is riveted part indicated in the following description and in part rendered apparent therefrom in connection with the annexed drawings.

To enable others skilled in the art so fully to apprehend the underl ing' features hereof that they may embo y the same in the chine is illustrated comprising 'a base l'upon which is mounted a main frame 2. The

main frame 2 carries a reciprocating ram 3 which in turn carries a tool head 4. The ram 315 reclprocated in any conventlonal manner and. the stroke thereofmay be' Referring to the drawing a shaping mavaried as desired in accordance with usual practice. A cfoss head 5, which supports a Work-table saddle 6 is. secured to the end face of the main frame 2. The saddle 6 carries. a work-table-G? and the table carries the work 30. As illustrated in the drawingsthe crosshead 5 is secured to the mam frame 2 bymeans of strips 7 and bolts 8,

' one only of each is illustrated on the drawing. The vertical movement of the cross head 5 on'the main frame 2 is effected by means of a screw shaft 9.- The screw shaft 9 may be controlled or rotated in any conventional manner. I Before-any movement of the cross head 5 can be effected on the main frame, it is necessary to unclamp the cross head by loosening the bolts 8.. Upon unclamping the cross head, it is apparent the weight of the table 6" and the cross head 5' tends to form an open space between the upper edge of the .cross head and the main frame. If .no means is provided for pro tecting the surfaces of engagement between the cross head, and the main frame, chips and dirt will 'collectin such' open space between the cross head and the; main frame whenever the cross head is unclamped to effect vertical movement thereof.

The work carrying table 6 and the saddle 6- are not only supported on the cross head 5 but are guided by means of surfaces formed on such crossv heads. A hook por-,

. tion 10 of the saddle 6, which projects over the part 12 of the cross head, not only rests on a bearing surface formed on the cross head butalso engages a wedge member 11 at the rear of the part 12 of the cross head. Moreover, a guide surface-is formed on the cross head near the lower part thereof and b'earin surfaces are formed on the front thereo It is very desirable and essential for good operation of the machine to prevent chips or dirt from injuring such bear-- ing and guide surfaces.

A guard member 15, which is preferably composed of sheet metal such for example, sheet steel, is secured to the top of the cross head5 by means of bolts 16. Suitable spacingmembers or washers 17 are placed be.

tween the top of the cross head and the guard member in order to holdsuch guard member above the top of the table saddle 6. A flat horizontal portion 18 of the guard member projects completely over the cross head 5 and over a portion of the work table saddle in order to cover all of the above mentioned guide Moreover, the horizontal surface 18 extends somewhatbeyond the ends of the cross head in order to protect the mechanism which is mounted on one end of the cross head 5 for effecting movement of. the head and feeding movements of the work carryin table 6.

The front edge of the guard'mem ber is bent upwardly to form a flange 19 and the end edges thereof are bent upwardly in like manner to form flanges 20. The end flanges 20 are cutaway at 21 in order to permit the easy removal of any chips which may be collected on the horizontal surface 18. The

and bearing surfaces.

rear edge of the guard member is bent 111 wardly to form a flange 22 which is much higher that the flangej19 at the front of the guard member and the flanges 20 at the ends thereof; The flange 22 is positioned adjacentto the main frame 2 ofthe machine and cooperates with the horizontal surface 18 to prevent any chips coming in contact with the surfaces of engagement between the frame andthe cross head. An opening 23 is formed on the horizontal surface 18 of the guard member to ermit the screw shaft 9 to pass therethroug -when the cross head is near its lowcrmostposition. The opening 23 in the guard member is covered by means ofa casing or box 24; which is secured to the guard member in any suitable or convenient manner. The casing 24 serves to protect the screw shaft 23 from chips irrespective of the crosshead position.

Near the front of the guard member 15 is mounted a yielding means 26 which serves to close the opening between the guard member and the table saddle 6. The yielding means 26 is preferably a leather strip which is riveted to the horizontal surface 18. The leather strip 26 is always in engagement with the work-table saddle 6 and prevents chips from passing under the guard member, as indicatedin 3 of the drawing.-

The resiliency of the guard member, which is composed of sheet metal, and the yieldable nature of the leather insures a firm engagement between the leather and the table saddle to prevent any chips from pass ing under the guard member. also be noted that the yielding nature of the strip 26 eliminates the necessit of ac- It should curately aligning the guard mem er with the top of the work-table saddle.

\Vithout further analysis, the foregoing will so fully reveal the 1st of this invention that others can, by app ying currentknowh edge, readily adapt it for various utilizations by retaining one or more of the features that, from the standpoint of the prior art, falrly constitute essential characteristics of.

either the generic or specific aspects of this invention and, therefore. such, adaptations should be, and are intended to be, compreformed on the rear edge of the guard member, said flange being positioned adjacent to the machine frame; and a leather strip sethe combination comprising a guard member extending over the cross head and a portion of the table saddle; a raised flange formed on the rear edge of theguard member and positioned adjacent'to the frame of the machine; and a yieldable member secured to the bottom surface of the guard member and engaging said table saddle.

3. In a shaping machine having a cross head mounted on the main frame, a table saddle movable along the cross head, and a screw shaft for moving the cross head, the

combination comprising a guard member mounted on the cross head and extending over the cross head and a portion of the "table saddle; a casing mounted over said guard member for receiving the end of said screw shaft; and a yielding member secured to the bottom surface of the guard member for engaging the top of said table saddle.

4. In a shaping machine, the combination comprising a cross head movable vertically along the main frame of the machine; a screw shaft for moving the cross head; a work table saddle movable along the cross head; a guard member secured to the top of the cross head and having a raised flange positioned adjacent to the frame of the machine; a casing mounted over an opening formed in said guardmember for receiving the end of said screw shaft when the cross head is in a lower posit-ion; and yielding means securedto the lower front surface of the guard member and engagingsaid table saddle.

5. In a shaping machine, the combination comprising a cross head movable with respect to the main frame of the machine; a work table saddle movable along the cross head; a guard member secured to the top of the cross head and extending over the table saddle, and yielding means secured to theguard member and engaging the table saddle.

6. In a shaping machine, the combination comprising a cross head movable along guide ways formed on the main frame of the machine; a work-table saddle movable along the cross head; a guard member secured to the top of the cross head and extending over the table saddle .and formed to exclude chips from the surface of engagement between the cross head and the main frame;

and yieldingmeans positioned between the guard member and the table saddle.

7. In a shaping machine, the combination comprising a cross head movable along guideways formed on the main frame of the machine; a work table saddle movablealong guideways on the cross head and having bearing surfa es thereon; a guard member secured to the top of the cross head and extending over the table saddle and formed to exclude chips from the surfaces of engagement between the cross head, the main frame, andfthe table; and yieldin means positioned betweenthe guard mem er and the table saddle.

8. In a shaping machine, the combination comprising a cross head having vertical movement on the main frame of the machine; a vertical scre'w shaft-engaging said cross head for effecting vertical movement thereof; a workrtable saddle movable along said cros's head, said table being movable along uideways formed on the cross head secured to the top of the cross head and extending. over guideways formed on the frame and on the cross head; and yielding means secured to. the guard member and engaging the top of the table saddle to keepchips and dirt from the guide and bearin surfaces between the frame, the cross hea and the table saddle.

9. In a shaping machine, the combination comprising a cross head havin vertical movement on the main frame 0 the machine; a vertical screw shaft engaging said cross head for effecting vertical movement thereof; a work table saddle movable along said cross head, said table saddle being movable along guideways formed on the cross head and said head being movable alon guideways formed .on the frame; a guar member secured to theto of the cross head the frame and on the cross head, said mem her having a casing mounted thereon to receive and cover the end of thescrew shaft for moving the cross head; and yielding means secured to the guard member-and engaging the top of the table to keep chips and dirt from the guide and bearing surfaces between the frame, the crosshead and the table saddle. A

In witness whereof,'I havehereunto subscribed my name. 1

ILLIAM F. ZIMM'ERMANN.

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