US1180896A - Press. - Google Patents

Description

I. A, WEAVER.

PRESS.

M'PLICAHUN HLEI) DUI-12,1914.

Patented Apr. 25, 1916.

2 SHEETS-SHEET I.

I. A. WEAVER.'

PRESS.

APPLICATION FILED DEC. 12, 1914.

Patented Apr. 25, 1916.

l Inf. I

L)? m a? Q v I i TE s'irA. i

nrorricn V IRA A. WEAVER, 0F SPRINGFIELD, ILLINOES, ASSIGNOR- TO THE WEAVER MANUFAC- TUBING GOMPANY, OFSPRINGFI ELD. ILLINOIS, A CORPORATION OF ILLINOIS.-

PRESS.

Application filed December 12, 1914.

i 2 the etlective through a high level-a5 on heavier work.

' A further feature of a structure einhodyin the invention resides in means for securin" a quick release of the operating parts upon -einoval of the load.

.inoiher clement oi" advantage is the lack of necessity of fastening the press to the floor or other support.

A still further object of theinvention is to provide the device with visual means to indi ate when the pressing member approaches its limit of movement.

Various other features of novelty and improvement will become apparent to those skilled in this art from consideration of a preferred embodiment of the invention do scribed below and illustrated in the accompanying drawingslforniiug a part of this specification, and throughout the various views of which like reference characters refer to the same parts.

in these drawings; Figure 1 is a plan view of such desirable embodiment of the in veution: Fig. 2 is an elevation of the structure; Fig. 3 is a detail illustration of the pawl and ratchet mechanism; Fig. 4 is a view of the pawl; Fig. 5 is a plan view of the quick release mechanism; Fig. 6 is a vertical section through the same, and Fig. 7 illustrates the adjustable connection of the bolster to the frame proper.

In this embodiment of the invention the frame comprises a bar of channel crosssection bent to provide the vertical legs 10 and 11, which at their upper ends are connected together by the cambercd or V-shaped portion or cross-member 152-, the marginalfiangcs of such oar projecting outwardly. as is illustrated. Each leg 10 and 11 by means of a gusset or bracket-plate 13 his Specification of Letters Patent.

Patented Apr. 25, 1&16.

Serial No. 876.804.

with the web extended upwardly for con- .nection with the lower end of the plate 13.

.\t their upper portions the legs 10 and ll arc connected together by a cross channel har 16 with its flanges presented upwardly. the opposite ends of such bar being fastened to the two legs of the frame by angle brackets l7. l7. and suitable rivets. A hollow casting 18 for the reception of the upper portion of the pressing-screw 19 is interposed between the horizontal web of the. cross-bar 1G and the apex of the main-frame l2 and has an enlarged upper end 20 shaped to--conf0rm to the bent portion of the bar 12. Its lower end is equipped with a base Qlbolbcd to the web 16, the casting 1S constituting a strut for the frame aS well as a sliding bearing for the screw.

These scouring bolts also fasten to the under-face of tho cross-bar 16 the circular flange. 22 of an apertured member 23 provided with an inwardly-extended curved flange, 24 constituting a ball race for the balls 25 on which travels an overhanging plate 26 secured by screws or otherwise to the hub 27 of a round handle 28, such hub being internally screw-threaded for the reception of the screw 19, the handle in effect constituting a nut for the screw. At its lower end this screw may be. shaped or formed as is necessary or desirable, for the attachment thereto'of tools required in the pressing work. In order to prevent the screw from turning, the interior of the casting 18 has two oppositely-disposed keyways 29 and 30 adapted to receive a cross-pin 31, extended through the screw-shaft, which is visible in the lower position of the screw through an aperture 32 through the Wall of the casting, as shown in Fig. 2. This hole permits the introduction and withdrawal of the. pin and also permits the latter to be seen so that the operator may be advised as to when the screw is approaching its limit of downwardly-prescnted flanges to which, by

means of rivets 35, two side- plates 36 and 37 are secured, such plates being longer than the channcl bar 34 and overlapping the out 0 channel-legs.

wardly-disposed flanges of the legs of the main-frame to which they are attached l, means of bolts 38 passing through holes in the plates 36 and 37 and the flanges of the In order that this holster may be vertically adjustable for-the accouunmla tion ofdilierent kinds of work. the frame leg flanges are provided with a plurality of holes or apertures 39 so that the holster or support may be, fastened in any desired adjusted position. The. holster channel ll is desirahly centrally apertured for the accommodation of portions of the work. and. ol course. the upper channel cross-bar lti apertured for the passage of the screw. 'lhe holster may he supplied with a work block 40 and holted to its opposite ends are extension-bars 41 and 4'2 projecting beyond the sides of the holster. as shown in Fig. l. for the support oi lone pieces of work which cannot he readily accounumlated between the legs of the frame 'lhcy are also especiallv well adapted for the holding of pieces or structures olawkward shape tohe operated upon by the crewpress.

In order to equip this structure with a quick release device. in the member 23 I employ two cooperating wa hers l3 and 44 havin g co-aclin; inclined or spiral faces 45 d 4t; rcspectivt-lv. ol' coarser opposite pitch than that of the screw 19. In a suitable recess between these washers. a relatively light expansion spiral spring -lT is housed. which is employed for the purpose of tending to force the spiral surl'aces 45 and H3 to slide on one another: that tendingto expand the structure or force the washi'srs apart.

For heavy work it is desiriihle to have, means of greater leverage and to accomplish this I fulcrum a verticall \'-opcratin;5 bellcrank handle 48 on a stud 45 secured to and projecting forwardly beyond the under surface of cross-bar H3. The short-arm 50 of such elhmv-lever or handle has an arm hinged or pivoted thereto at 5; such arm at its free end having a vertically apertpred boss 53 accommodatine a pawl 54-. the shank of which is provided with two opp. site notches 55 and 5t and the top end of which has a knurled handle 57 pinned thereto. This arin 51 also has a longitudinal aperture or cavity 58 therein receiving a spring 5.) which presses outwardly a. locking-ball 60 adapted to engage either one of the notches 55 or 56, as the case may he. Ilandle 28 on its upper surface is provided with a circular groove (31, the bottom of which has ratchet teeth 62 extending, upwardly only a portion of the depth of groove 61. Pawl 54 is adapted to travel in the groove G1 and co-act Wit-h thiimtchet teeth 02.

Qperation: The operation oi this appliancc is as follows: Assuming that the work is properly supported on the holster, as for instance by means of the block 40 or the extensions 41 and 42, and that the lower-end of screw 19 has been provided with a suitable tool for the pressing operation, and assuming further that it is comparatively light work to he performed, the handle 43 will be thrown down and the arm 51 swung back so as to be out of cooperative position with relation to the ratchet or handle 28. The operator by hand then turns the handle 28 in a direction to cause a downward travel of the screw. This is quickly and easily fiCCOlTb plished because the handle constituting the operative-nut, as well as the screw. are. sup ported on the group of halls As soon, however, as the appliance. secured on the end of screw 19 engages the work. the two washers come into action. having been turned so as to bring the highest points of their inclined surfaces into co-action during the downward feeding of the screw. That to say, as soon as the screw engages the work, the two washers act as a thrust collar between the hub of the handle and the under-surface. of the cross-bar 16 so that further turning of the handle will effect the downward pressing-operation with the strain etween the work and the, cross-bar, which is centrally braced, of course, by the strut or hollow casting 38. Obviously. under these circumstances. there is no strain on the ball hearing. A slight reverse pull on the handle th release the load will cause the abrupt inclipcs on the washers to instantly ease the strain on the handle and screw so that full release is readily accomplished. ttated differeiitly, the inclined washers contract. somewha in opposition to the slight pressure of light spring 47 upon reversal of the. turning of tLe handle and by such contraction, ease the lliad. In case heavier work is to be done by the press the arm 51 is swung down so as to bring the pawl into co-action with the ratchct-teeth of the handle. in which position it is held by the weight of arm 51. Ycrtical manipulation of handle 48 will cause the horizontal turning of the handh 28 under great leverage action. he operationof the other parts of the mechanism being substantially as described above.v sired to release the work, the operator by turning the handle 57 simply reverses the pawl, in whichnew position it is held bythe hall 60 under the action of its spring engag' ing the other one of the apertures 55 or 56.

The vertical rocking of the handle 48 will now cause a reverse rotation of the handle 28 to release the load,

It should be observed that h manipulating the handle 48 in a vertical direction; there is no tendency to shift the frame and the parts mounted thereon on the floor, and; consequently, it is unnecessary to boll 'or otherwise attach the feet to the floor. Attention also summoned to the fact that the pawl 54 rides easily in the groove $1 with- VVhen it is (lo-:-

out unintentional displacement by reason of the fact that the groove is deeper than the ratchet-teetlr From this description and illustration, it should be apparent that this embodiment of the invention is remarkably simple in structure and can be ]u'oduced at relatively small cost. Its operating mechanism is powerful and is graded to conform to the character of the work to be executed. The quick release device is valuable in that it saves the operators time and strength and it should be ob sen ed that the parts are so combined that the handle may be turned easily by reason of its ball-bearing support amt that such ball-bearing is protected and is unlikely to become damaged. The operator is further-- more advised by the position of he crosspin 31 when he is reaching the limit of the downward stroke of the screw so that there is no likelihood of his exerting useless etl'ort with a possible unmwessary strain on the structure.

hile I have herein set forth with some degree of particularity and detail a desirable incorporation of the invention in an appliance of this general character. it is to be understood that many minor mechanical changes within the scope of the appended claims may be made in this device and still retain the advantageous features of the invention. (lonsemiently. the appended claims should be limited only as is required by the state of the prior art. In some instances it may be advisable to cross-connect the feet 15.1."). or the legs 10 and ll by a brace or connection, (53. shown in Fig. :2. although this in some cases may not be required.

I claim:

1. In a press-construction of the character described, the combination of a main-frame comprisi g a bar of comn'iercial cross-section bent to provide a top cross-mendier and a pair of upright-legs with laterall vprojccting apertured flanges. a bolster. and means adapted to be accoimnodated in the apertures of said leg flanges and adjust ably support the holster thereon. substantially as described.

2. In a press-construction of the character described, the combination of a maindrame comprising a bar of commer ial cross-section bent to provide a top cross member and a pair of uprightdegs. a cross-bar fastened to said legs. a hollow, strut between said cross-member and crossbar. a screw accommodated in said strut. and an operating-nut for said screw on the side of said cross; bar opposite said strut. substantially as described.

In a press-construction of the character described. the combination of a main-frame comprising a. bar of commercial cross-section bent to provide a top cross-member and a pair of upright legs. a crossbar fastened to said legs. and a bolster adapted to support the work and vertically adju table on said legs. a hollow strut between said cross member and crossbar. a screw accommo dated in said strut. and an operatingr nut for said screw on the side of said cross bar opposite said strut. substantially as descri bed.

4. In a 1u'ess-constrm-tion of the character described. the combination of a main-frame comprising a channel-bar bent to provide a top cross-member and a pair of upright legs. a cross-bar fastened to said legs. a bolster vertically adjustable on the flanges of said legs. a hollow strut between said cross-member and cross-bar. a screw accommodated in such strut. and an operating-nut for said screw on the side of said crossbar opposite said strut. substantially as described.

In a press-construction of the character described. the ombination of a n1ainfran1c comprising a bar of connnercial cross-section bent to provide a top cmssanembcr and a pair of upright legs. a cross-bar fastened to said legs. a hollow strut, between said cross-member and cross-bar. a screw accommodated in said stint. means to u'event turning: of the screw in the strut and to limit its withdrawal. and an operatingpnut for said screw on the side of said ross-bar op posite said strut. substantially as des ribed.

(3. In a press construction of the character described. the combination of a frame. a screw held against rotation in said frame. an operating-nut. for vsaid screw. and pressure transmitting means between thc screw and frame constructed to release the work operated upon by the screw quicker than the action of the nut and screw alone would re lease it. substantially as described.

7. In a prcss-construction of the character des ribed. the combination of a tame. a screw held against rotation in said frame. an operating: nut for said screw. and prossure-transniittingr means interpose' between the nut and frame and constructed to release the work operated upon by the screw quicker than the action of the nut and screw alone would release it. sub tantially as described.

8. In a structure of the character described. the combination of a frame having a cross-bar. a ball racc member mounted on the under side of said crossbar. a series of balls in said ball-race a 1vrcssurc scrcw. a nut hand-wheel on said screw and support ed and revoluble on said balls. and pressure transmitting means interposed between said nut hand-wheel and frame and constructed to release the work operated upon by the screw quicker than the action of the nut and screw alone would release it. substantially as described.

9. In a press-construction of the character described. the combination of a frame. a screw held against rotation in said frame,

iii

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tween the nut and frame "()llll)lii ill 1f a pair of eoi'ipei'atilig' \\;ISIHI'.- ith' eo-aetiug in eiined SEH'i MI' 'a of uiekei' iiiteh than the th ead of the serew. sudmtatttiztiiy :ts de ei'ihedt A II, In a ii'eas-eoi'nt i'iietion oi the ehai= tl iti' i'IPSiII Jt I, the eonihiinition of a frame. a serew held :fi'ainst rotation in said frame. an opei'atii g nut ioi' Eaid s rew. and a \\'()]'I\'4 ieieanin: n-esqireii'atmnitting nieam litand frame int-hiding a pan o w;-;im. i-.|it. an artuating handle mounted t e: in a r-uh-tantiaitt \Pllit'zti riane. and

means eonneeting said handie and nut to transmit the oseillatonv movement of the. handle into a rotating movement of the nut. .suhstantiall) a desei'ihed.

15. In a [)t'tSFdtHistl'Ht'ti 'll ot' the eharaetei' (IOH'I'IIIWI. the eonihination ot' a frame, a t'l'tittlii ii pt: tti Nl'tW held against l'otation in the t'i'anu'. a horizontal serewopei'ating i-atehet-nut with a eii'eulaigroove having i'atiIn-tteetIi at the bottom of the groove of Ie height than the depth of the i'oo e. an aetnatinn-handle mounted to I'Ot'k in a snIwtantiaIIY vertieai piane. an arm hing d to said handle. and a pawl eai'i'ied h aid arm and adapted to tit in the nut groove. and eoopei'ate with the i'atehebteeth. u|i tantial| a desei'ihed it In a ])l'(r tthtl'tlt'tiuii of the that'- aeteititNIiIttti, the eoinhination of a frame, and a holster eonipo ed ot' a hat of e niniet'eial ei'o.s -seetion and aide-plates t'astened thereto and overlapping' aid I'i'aiue, sulwtatttialI) a es 'lihed.

It". In a ]u'eswwuntruetion of the eharaetei' (itHI'l'i t I. the eoinhination ot' a fI'tHHt with :tlltl'lllltti his. a holster eoniposed ot' a ehannel-hai and aidwplatw fastened to the flanges of the hanneI-Imi' and overlap pin;- the leg ot th frame. and int-am for atljuatahl v supporting aid ph|tein the holea ot' ait| leg-apertures. suivtantiail) as tit' t'l'II)('ii.

1H. In a l)lt fi-t'tillhtl'lit'fi011 of the vitalaetei- |e e|'il;ed, the eoinhination of a frame, a -i-i'ew heId :tfjtlilht rotation in said frame. an operating nut l't)2tttillf with said serew, a Imiafll \ei-tieally adjustable on said frame, and extensions pioieeting laterally from the Imhtt't near it opposite ends and adapted to awi t in holding the \Vtit'h on the hoIater. suhntantially as desei'ilved 1! In a ti'uetui'e of the ehai'aetei' dcserihetl. the eoinhination of a frame having ('I'l. -|Hll'. a halt i'aee member mounted on the under side of said (PUSH-hill. a series of hall in said hail rate. a |)l'tSslH'WStl't'W. and a nut handnvheei on said SPYCW and support d and i'evoiuh le on HilltI haHs -\uhstantiaII Y as itfll'iiitti.

In testimony whereof. I have hereunto signed in) name in the )I'PHCIH'U of two sub- -i'rihin witneases.

IRA A. \VICAVICR. \Vitneswsn

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