US1435981A - Cloth clamp - Google Patents

Description

- shown in Figure 1.

Patented Nov. El, i322.

xii W359i@ PATENT @FFHCQ BARNETT RUBINSTEIN, 0F ST. LOUIS, MISSOURI.

\ CLOTH CLAMP.'

Application led July `1G,

To all whom it may concern.:

I Be it known that I, BARNETT RUBiNsTniN, a citizen of the United States, residing at the city of St. Louis, .and- State of Missouri, have invented a certain new and useful Improvement in Cloth Clamps, of which the following is a full, clear, and exact description, such as wlill enable others, skilled in the art to which it appertains, to make and use the same, reference being had to the accompanying drawings, forming part of this application.

This invention relates to clamping devices for holding the fabric in position while it is being cut or spread upon the table, and is an improvement upon the clampI for cloth cutting machines disclosed in Letters Patent of the United States No. 1,389,320, granted to me August 30, 1921.

rihe objects of the present invention are to provide a cloth clamping device which can be used at any point on the table intermediate its ends as well as at the ends of the table, and which device is detachable so that it can be removed from the table when not in use, thereby leaving the surface thereof free from obstructions and projections.

Further objects of my invention are to provide a device of the class described which can be eiiectively used in connection with a table of any width Without distorting or affecting the efficient operation vof the clamp-A ing bar and to provide actuating means for said clamping bar whereby the latter can be moved upwardly asufficient distance to clear the ends of the fabric and permit said endsy to resume their normal positions on the table so that said bar upon its return movement will automatically engage and clamp theends of the fabric in position. -1

With the foregoing and other. objects in view, my invention consists lin certain novel features of constructionand arrangements of parts hereinafter more fully described.

and claimed,` and illustrated in the accomy panying drawings. in which- Y Fi re 1 is a plan view of one end of a. cutting table' showing the fabric-'clamp .in position thereon. A

Figure 2 is a plan view of an intermediate` portion of a cutting table and showingv the',

location of the clamping bar. Figure 3 is a front elevation of the table,

1921. Serial No. 485,348.

Figure 4 is a longitudinal vertical cross section taken on line 4-4 of Figure 1.

. Figure 5 is a fragmental vertical cross section of a table and the cloth positioned thereon and showingvthe position of the clamping bar before the same is actuated.

Figure 6 is a similar view of the bar in clamping position and showing in dotted lines said bar in its eXtreme upward position.

Figure 7 is a vertical cross section taken on line 7,--7y of Figure 1.

Figure 8 is a vertical cross section taken longitudinally through the treadle and showing the adjustable connections between said treadle andthe adjusting means.

Referring by numerals to the laccompanying drawings, 10 designates a vcutting table which is arranged to receive a cloth 11. This table is generally of a predetermined length to receive bolts of cloth when the same are spread thereon. In spreading the bolts, the ends of the cloth are placed at the front or lefthand end of the table and are clamped in position so that the operator may properly arrange the cloth on the table f The clamping means consist of a clamping bar v14,-transversely disposed` on top of the table and movable vertically by means of rods 15 which extend upwardly through the table and have their upper ends seated in the ends of bar 14. These ends 16 of rods 15 are threaded and are reduced in diameter so as to form shoulders 17 against which the ends of bar 14 are forced by means of nuts 18 which arefscrew-seated on the threaded ends 16. .The vertically disposed openings formed in table 10 for the passage of rods 15 arelined with tubular members 19 which form bearings for said rods and eliminate. friction -or binding action and maintain rods 15in proper operative alinement. The lower ends of these rods which extend downwardly below the table are threaded, as indicated atq20,and are seated in the ends of a transverse member 21 located `a suitable distance below table 10.y Nuts 22 are screwseated on thethreaded ends 20 above and below each end ofthe vtransverse barv 21 so that the latter can be adjusted verticallv with respect to rods 15y .by moving nuts 22 up or down on the threaded ends 20.

Eye bolts 24 have threaded engagement with transverse member 21 adjacent to each rod 15 andl are locked inl position by locknuts 25. These eye bolts are presented dovvn- Wardly, and connected to each eye bolt is the upper end of la contraction sprinig't, 'the lower end of 'which is' anchored v'tothe hoor by means of an eye bolt 27. Springs26 'are under tension and tendto :heldthe.'clamping` lvertically on transverse 'member 21.

Extending upwardly from member 21, and spaced equidistant from `rods 155 are eye bolts 28 provided With l'ock. nuts 29. Pi'votfaill'yv connected 'to'eye bolts 'V28 are the lower ends' or' vertically disposedfiinlzs B0, to .therupper ends of which are piv'ota'lly connectedthe outer or divergent ends of arms 321. Y.IDepending 'from the 'underside of tablelll are bearings 32 provided With a vertically dis? posed series 'of apertures Vor seats 34,*W'hic`h are .adapted to receive 'screws Aor pins'Bb, the

latter forming pivotal supports for "arms 31. Each `arm 31 is provided with Aa longitudinally disposed series of apertures 36 designed to receive a pin or screw 35. Tlfiusfb'y removing ya pin,85 arms 31 canbe :adjusted longitudinally by bringing oneof the otherl apertures 36in alinemfent Withapertu're l34, or vertically by transferring 'the 'pin 35 to v another of said 'apertures t34.

The Vinner ends of ar'InsBl are `'connected 39, said chain forming a flexible `'connection betiveen the upper end of li'nk B8 and pin 40 seated in the inner ends oit 'arms l3l. These inner ends arelpreferably joined Atogether'by a` block 4l secured Jthereto in any {suitable manner so as to .reinforce and sfilen said ends. If desired, .arms 31 could 4becast in one piece or formedby bending. a bar to suitable shape. The lower 'endi'of link 38 is providedivith an aperture "in which lisse'a'te'd afhook 42, the low-er end 'of 'which isthre'ade'd and carries a .nut 44.

j f The rear end 'of treadle is piv-otaflfly mounted in bearing 45.eXtendingnpvvardly from 'the vflo'or. That :portion of the .trea'd'le whichis immediately heiow flink' 3e :is ipr'ovided 'vvith alongitudinal'l disposed slot 46 and downwardly presente@ non-oircular recesses 47. -Slot 46 permits thepassage of.

the shank of 'hook .42, therethroughjso that the Anut 44 'carriedlgby th'e flower end `of hook 42 vcanv enter and be seated in vany. l'one or recesses 47 thereby providing fanzeasy fadjustmentof link-38 With'respect toF'thepivot-V almsupport of treadle?.

In :cutting out lots fot j Toth iforfshirtg'b'oits of cloth are spread upon 'the tablelin -rayers necessary to manually operate the clamping means after each positioning of the ends of the cloth at the respective end of the table. By use of my device, the ends of the cloth are placed on the table as 'shown in Figure 5', 'and tre'adle '37 is then operatedtobring the clamping bar`14 into the position shown in dotted lines in Figures 3 and f6.' The -upi Ward movement ofbar 14 carries l'the ends of the cloth `upwardly vuntil they are -clear of bar :14,"ivhereupon they vWill fallback 'into their proper posi'ti'onjfon -table r'O.z `When pressure is removed from the treadle 37, bar

14"'islrele'ased. an'dunder the i'inrluence of springs "26', Willmove 'downwardly and ven-v clamping bans 14'can 'be moved to'any position on'the table by removing nuts T8 from the threaded Aends o ii rods '.15 'so' 4that the clamping bar1'4'can befli'ltted and moved to the 'desired position, While rods l5 willmove downwardly, `thereby leaving the table -free from any projections.

A. clamping devicev constructed 'in accordance with my inventionV is simple -in y'operation and inexpensive to manufacture, and can be very Aeasily 'removed from ft'hetabi'e When not in use. j ""f `.Obv'i'ously, various yhanges vin rthe -from and rconstruction of ymy improved vcl'an'rping device can `beinafd'e 'and substituted Irfor those herein shown and described without departing from my invention, and 1 do notwish to be limited ft'o` 'the mspec'ifficeonstruction herein. described.

v.llhat I lclaim is: f 1n fa cloth'olampi-ng device, the confidi` nation 'ott table, a'elamping doar transversely mounted thereon .and movable 'vertically with respect thereto, rods -d'e'tachalbly' lse cured 'to the ends of said bar l and leztending downwardly through said table, 'a transverse member adjustably connected fto ft-he lower' ends Sodi".` said' rods, contraction Vsprings iconn'eetedatftheir upper ends to said' transverse member and having their l'olyver rends vanchored Vto the filoni', fa l"pluralityI fofi-levers pivotally supported on the 'underside off's'aifd table, links connecting the free ends of said levers with said transverse member at points equidistant Jfrom the points of attachment of said rods and said transverse bar, and treadle for operating said. levers.

2. In a cloth clamping device, the combination of a table, open ended tubular members vertically disposed therein, rods mounted for vertical movement in said tubular members, a clamping bar detachably secured to the upper ends of said rods, a transverse member detachably carried by the lower ends of said rods, contraction springs having their lower ends anchored to the licor, and their upper ends adjustably iXed to said transverse member, whereby said clamping bar has a tendency to move towards said table, a plurality of upwardly presented members adjustably seated in said transverse member and in spaced relation with the points of connection between said rod and said transverse member, links pivotally connected to said upwardly ex tending members, bearings depending Jirom the underside of said table, and foot-operated levers mounted in said bearings and pivotally connected to said links.

3. In a cloth clamping device, the combination of a table, rods mounted for vertical movement in said table, a clamping bar detachably secured to the upper ends or" said rods, a transverse member adjustably carried by the lower ends of said rods, contraction springs having their lower ends anchored to the oor and their upper ends adjustably secured to said transverse member, a bearing Xed to the underside of said table, a lever pivotally mounted in said bearing and having a plurality of pivotal connections with said transverse member, said lever being adjustable vertically and longitudinally relative to said transverse member, a treadle, a link extending upwardly from said treadle and havingadjustable connections therewith, and flexible operative connection between the upper end of said link and the rear end of said lever.

4. In a cloth clamping device, the combination o'f a table, rods mounted lor vertical movement in said table, a clamping bar detach ably secured to the upper ends of said rods, a transverse member adjustably carried by the lower ends of said rods, springs connected to said transverse member and adapted to move said clamping bar downwardly against the table, a plurality of upwardly presented members adjustably seated at spaced intervals in said transverse member, links pivotally connected to said upwardly presented members, bearings de pending from the underside of said table, levers pivotally mounted in said bearings and having their front ends pivotally connected to said links, a link operatively connected at its upper end to said levers, a treadle having a plurality of downwardly presented seats, and an operative connection between said treadle and said link, said connection beingI adapted to be displaceably seated in any one of the seats oi said treadle.

n testimony whereof hereunto affix my signature this 12th day of July, 1921.

BABNETT RBINSTElN.

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