US769020A

US769020A - Spacing-table for punching-machines.

Info

Publication number: US769020A
Authority: US
Inventors: John V W Reynders; Willard T Sears
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-10-03
Filing date: 1903-10-03
Publication date: 1904-08-30
Anticipated expiration: 1921-08-30

Description

- PATENTED AUG. 30, 1904, J. V. W. REYNDERS & W. T. SEARS.

SPAGING TABLE FOR PUNGHI NG MACHINES.

ABPLIOATION FILED 00T.'3, 1903.

ulzm=a7mm [numfvn claim/W No. 769,020. PATENTED AUG. 30, 1904.

J. V. W. REYNDERS & W. T. SEARS. V

SPAGING TABLE FOR PUNGHING MACHINES. APPLICATION FILED 001'. a, 1903.

. L L I I J H L M e PATENTED AUG. 30, 1904.

J. V. W. REYNDERS & W. T. SEARS. V SPACING TABLE FOR PUNGHING MACHINES.

. APPLIOATION FILED OCT. 3, 1903."

,K0 MODEL. 7 3-8HEETB-SHEET 3.

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UNIT D.- STATES JOHN v. W. REYNDERs AND WILLARD T. sEARs, OF HARRIsRURe,

. PENNSYLVANIA.

I Patented August 30, 1 904.

PATENT A OFFICE.

SPACING-TA BLE FOR PUNCHINC-i-MACHINES.

SPECIFICATION forming part of Letters Ifatent No. 769,020, dated August 30, 1904.

Application filed October a, 1903.,

To all whom it may concern.-

. Be it known that we, JOHN V. W. REYNDERs and WILLARD T. SEARS, citizens of the United States,and residents of the city of Harrisburg, in the State of. Pennsylvania, have invented certain Improvements in Spacing-Tables for Punching-Machines, of which the following is a specification. Our invention relates to certain improvements. in spacing-tables for punches and other machines which are primarily designed for forming-holes in a piece of material at predetermined distances from each other, the I object of the invention being to so improve the detail constructionof a device of the character above noted that is shall be possible to perform a given amount of work in less time than has hitherto been'possible.

A further object of the invention is to provide a construction by which the'spacing-table may be adjusted so that it may be conveniently moved through definite distances with greater ease and accuracy than has hitherto been possible, such construction being of such a nature as to permit the use of two or more sets of stops, which may be used either together or separately.

It is further desired to so construct the spacing-table that a slight movement of'the work operated upon in the line of motion of the punching-tool is permissible without appreciable movement of'or strain to the carriage itself. We also wish to provide a spacingtable With means for quickly and easily clamping work, which means shall at the same time be of such a nature as to hold said work so that it will not be possible for it to become loosened by jarring or by reason of the clamps cutting into it.

These objects we attain as hereinafter set forth, reference being had to the accompanying drawings, in which I Figure 1 is a side elevation of our improved spacing-table. Fig. 2 is a plan view of same. Fig. 3 is an end elevation of. the spacing-table, partly in section, and showing a portion of the head of a punching-machine; and Figs. 4 and 5am respectively a plan and side eleva- Serial No. 175,663. (No model.)

tion illustrating the detail construction of the operating-wheel for the clamping-jaws.

In the above drawings, A illustrates the framework of the support for the spacing table or carriage, wh1ch framework is provided with portions a, forming tracks or guides for wheels 6, with which the spacing tableor carriageB is provided. In the presentin- 3, one end of said screw being provided with an operating-wheel c, which is free to revolve thereon. As shown in Fig. 5, an arm 0 is fixed to the screw-shaft and has upon it a lug 0 between which and a similar lug 0 projecting from the wheel 0, a spring 0 is confined. Upon the face of the wheel 0, adjacent to the carriage B, is a series of ratchet-teeth (indi' cated at c in the drawings) with which a pawl c engages, so as to hold the wheel in a definite position, said pawl being carried upon a bracket Z), fastened to'the carriage. There are two nuts b operatively carried upon *the screw 0, and these have hinged to them clamping-arms If, so designed and arranged as to engage and hold between them apiece of m a terial to be operated upon, at the same time being free to permit limited vertical motion of such piece.

Projecting from that portion B of the carriage B which extends in the direction of its line of motion is a piece D in the form of'a plate. This carries at its outer end a slotted block cl, by which is supported adog d, this latter being so held as to be movable to one side or the other for a purpose hereinafter explained. A projecting piece or handle d is fastened to the dog d and extends upwardly through suitable slots in the block (if and the plate 1).

A series of brackets E serve to support a,

trough 6 parallel to the line of motion of the carriage,in which may be removably placed one ormore series of stops or spacing-blocks c and 0 said troughv being formed, in the present instance with two undercut slots for the accommodation of these blocks.

gitudinally-extending strips and the width of the dog d is such that when the handle d is substantially at the middle portion of t e slot in the block (Z said dog rests upon the strip 6 without engaging either of the series of syncing-blocks (r or 0 Motion of the handle (1 to either side of this position will, however, bring the dog (Z into contact with one or the other series of said stops or blocks.

A bar F is so fastened to the carriage B.

slots filled with blocks, as c, each three inches :inzlength, it being noted, as shown in Fig. 1,

that. these blocks have their upwardly-projecting edge portions beveled, so that the whole series is somewhat similar in appearance to a rack having beveled teeth.

Owing to the fact that the nuts of the clampingjaws respectively engage left and right hand screws, the revolution of the screw shaft results in said jaws being either both moved toward or both from each other. If now a piece of material to be operated upon be placed between the said jaws, revolution of the wheel 0 will shortly bring the lug 0 so that through the medium of the spring 0 it will press uponlug c of the arm 0, and hence cause revolution of' the screw-shaft C. When such material is finally grasped by the jaws'b it is still possible to turn the wheel cfor a slight distance, so as to compress the spring 0%, and thereby continually keep the screw-shaft C in a state of torsion, which tends to still further close said jaws. jarring or cutting of the jaws into the material of the work tend to loosen their hold thereon, said clamps being under strain would automatically tighten and continue to firmly hold the material.

After a single hole has been punched and the blocks 0' once set within the trough the handle 0Z is brought to its midposition in the slot of the plate 1) and the carriage moved forward on its guides by power applied in any desired manner, the said handle being su bsequently moved, so that the dog (11 will come in contact with the upwardly-projecting face-of the block or stop immediately adjoining the one with which it first contacted, after which the punching-machine is again operated.

If, as shown in Fig. 2, it be desired to employ the second set of blocks 0 these may be placed in their slot of the trough so as to have their faces in position to engage the dog (Z' midway between the faces of the blocks e, and in operation the handle (Z is so moved as There are in theslots in addition to said blocks lon-' Should to cause the dog (1 to engage the blocks a and e alternat'ely, the carriage being moved forward eaclr time by a distance equal to onehalf of the length of the blocks.

\Vhen the punch is stripping or moving out of a piece of work, lifting the latter a limited distance and then dropping it, the hingil'ig of the clamping-jaws or pivots at right angles to the line of movement of the punch permits a slight upward motion of the work without appreciable movement of the carriage and without causing strain thereto.

It will be seen that the length of the space between operations on a piece of work is determined. by the length of the blocks or steps (2' and which may, as in the form illustrated, be provided with projecting portions, or, if desired, may have slots or recesses against or into which the dog supported by the carriage may enter.

It will be understood, for example, that in preparing a spacing-table for use much less time would be occupied in placing a threeinch block in position than would be necessary to measure and adjust a movable stop as in the devices hitherto known, and in addition to this the probability of mistakes in measurement is rendered unlikely, since stops of predetermined size for the work to be done are employed, which require no other ad justment than the placing in position within their trough.

\V e claim as our invention 1. The combination of a supporting structure, a carriage movable thereon and having means for holding material to be operated upon, a trough, a series of blocks therein of lengths bearinga definite relation to the spaces to be moved o\er by the carriage, an arm on the carriage, with a movable dog on the arm, said dog having a hand operating-bar and being free to be moved in a substantiz illy longitudinalliue into engagementwith said blocks, substantially as described.

2. The combination of a supporting structure, a carriage movable thereon, a plurality of series of removable stops having means whereby they are supported adjacent to each other, said stops being of lengths bearing a definite relation to the distances through which said carriage is to be moved and means on the carriage for engagingthe stops, substantially as described.

8. The combination of a supporting structure, acarriage movable thereon, a plurality of series of removable stops having means whereby they are supported adjacent to each other, said stops being of lengths bearing a definite relation to the distances through which said carriage is to be moved and a single device on the carriage for engaging all of the series of stops, substantially as described.

4:. The combination of a supporting structure, a carriage movable thereon, a plurality of series of removable steps of lengths equal to the distances through whichthe carriage. is

to be moved, means extending parallel to the lineof motion of the carriage for supporting the series ofsaid stops all on the same side of said. carriage, and a projection from the carriage having means for engaging the stops at will, substantially as described.

5. The combination of a supporting structure, a carriage movable thereon, a trough supported parallel to the line of motion of the carriage, a series of blocks therein having face portions, said carriage having a dog free tobe moved in a horizontal line substantially at right angles to the line of motion of the carriage into and out of engagement with said face portions of the blocks, substantially as described. x

6. Thecombination of a supporting structure, a carriage movable thereon, a plurality of series of stops, means for supporting said stops in lines substantially parallel to the line of motion of the carriage, and amovable piece supported by the carriage and free to engage the stops of more than one series of the same, substantially as described. 7.. The combination of a supporting structure, a carriage movable thereon, a plurality of series of stops, means for. supporting saidstops in lines substantially parallel tov the line of motion of. thecarriage, and a piece movable in a line between said series of stops, and free to be moved at right angles to said line to engage either of the series of stops, substantially as described.

8. The combination with amachine havinga vertically-moving tool, of a supporting structure, a carriage movable thereon, a pair of jaws on the carriage, means for moving the jaws toward and from each other, said jaws. 1

having means connecting them to the carriage whereby they are free to movein the direction of the line of motion of said to'ol, with means for governing the distances moved through by the carriage, substantially as described. v i

9; The combination with a machine having a vertical] y-movable tool, of a supporting structure, a carriage movable thereon, a pair of jaws on the carriage and means for moving the jaws toward and from one another, said jaws being hinged to said carriage and free to be moved to a limited extent in substantially.

the line of action of said tool, with means for permitting the carriage to be moved forward through predetermined distances, substantially as described. v

10. The combination of asupporting structure, a carriagemovable thereon, a shaft on said carriage provided with right anduleft hand screw-threads, a pair of clamping-jaws respectively engaging said threads and means for turning said shaft to simultaneously move the jaws toward or from each other, with means for limiting the motion of the carriage, so that it may be moved through predetermined distances, substantially as described.

' 11. The combination of a supporting structure,a carriage movable thereon,having means whereby its motion is limited to predetermined distances, a pair of clamping-jaws on the carriage, means for simultaneously-moving said jaws toward or from each other, said means including a shaft, means for turning the same, anda yielding coupling between said turning means and the jaws, substantially as described.

12. The combination of a supporting structure, a carriage movable .thereon, apair of nuts carried by the carriage, means'for simultaneously moving the nuts toward or from each other and a jaw hinged to each of said nuts, with means for. limiting the motion of. the carriage to predetermined distances, substantially as described.

13. The combination of a supporting structure, a carriage movable thereon and provided with a device whereby its motion is limited to predetermined distances, a pair of clampingjaws on the carriage, means for simultaneously moving said jaws toward and from each other, said means including a shaft, means for turning the same, and a yielding coupling between said turning means and the jaws,. with means for locking said turning means in a definite position and maintaining said coupling means under strain, substantiallyas de-' scrlbed.

14c. The combination of asupporting strucmaintained -in a state of torsion, substantially as. described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN V.-W. REYNDERS, WILLARD T. SEARS. Witnesses:

WM. 0. ARMon, MARY E. HAUER.

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