US2477433A

US2477433A - Power-table sewing machine

Info

Publication number: US2477433A
Application number: US619452A
Authority: US
Inventors: Irving F Webb
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1945-10-01
Filing date: 1945-10-01
Publication date: 1949-07-26
Anticipated expiration: 1966-07-26
Also published as: GB608564A

Description

l. F. WEBB 2,477,433

Y POWR-TABLE SEWING lMACHINE 5`Sheets-Sheet 1 A July 26, 1949.

Filed oct. 1, 1945 July :26, 1949. l. F. WEBB POWER-TABLE SEWING MACHINE Filed oet. 1, 1945 5 Sheets-Shet 2 July 26, 1949. j 1.- F. WEBB l2,477,433

POWER- TABLE SEWING MACHINE Filed Oct. l, 1945 3 Sheets-Sheet 3 www. f 33W Patented July 26, 1949 i intacts l ifoWEn-'TABLE sEWiNG MACHINE. .irate instelt i.; eine it. rim

a. corpora n' Appiiation oet'ob at a particular time. governs the typeof sewing u machine that is, necessary for. manufacturing purposes. It is customary in these establishments to place the idle' machines, aswell as the accompanying power-tables,` in storage so that this equipment will not occupy the valuable floor space normally allocated for. production. Whenever such an establishment turns its productive facilities from one type of product to another,- it becomes necessary -for them to: rearrange their sewing equipment.` f With the` type of" powertable heretofore used,l this requirement of equipment rearrangementpresented a difficult problem as each sewing machine had to 'beused with its own special power-table, thus requiring the moving and. storing of the 'bulky table as well as the individualsewing machine.

In this respect, it is to be understood that it has been standard practice to provide each sewing`A` machine with its own specialxpoweretable and eleotricetransmitter for driving the machine. The p owerftable, is usuaily` provided w-ith a cute out or `opening `in the table `portion thereof for the purpose of lreceiving the sewing machine igvhichl is mounted within the opening in proper operative relation with `the transmitter which 4is carried beneath the: table. each power- 'table is adapted to receive sewing machines of a single type only, the other types having different ldimensions and different beltfpnlley dispositions. Therefore; it has beenl necessary for Such sew ing machine owners to havea'. great deal of idle but expensive equipment on handat all times.

Thus; it is the purposeof the present invention to obviate the above noted diiiiculties by the proie vision of a powertable which may be standard for a; large number of sewing machines.

A further object of the present invention' is the provision of a sewing machine and a power: tableA insert, which elements are so combined that they, present a unitary combination of parts which may be readily applied to and removed from` a standard type of poweretable. y lilith4 the above and other obiectsln, View. es will hereinafter appear, the invention comprises the devices. combinations and arrangement of .isset llosalarming t ofNettj Jersey et `1, 1945, serial No". 619,452 t crains. (o1. lia-assi 2 parts hereinafter set forth and illustrated i.lfih? accompanying drawings of a preferredembodi-n ment of therinventioln, from which the several featuresr of the invention and the `advantages obtained thereby will be readily understood by those skilled inthe art, Y

In the ampaellyng df'flW-llgs, Fg- 1 1:`;.eP,1"?f Seuls; o top plant View 0f o Seli/lng nl .ahfle @2d power-table combination embodying the present invention. ,A

Fig. 2 represents sectional. vien of. one 0i ills sewing machine hinges and taken substantially along lineZM-g of Fig. l. e p

Eig. 3 represents botiomliiievt @f *h Pow-@Fr table with thesowine machine removed from thereplaceable table-insert u i l e Fig. lA represents, an enlarged detail view the locking means used lor Sewriog, the lablsf insert within the boweltable 0PDillg-- Eig. 5 represents a `vertical sectional'view, oi the sewing machine and powertable combination and token Substantially along lise 5-.5 0f Fgl Fie. e represents, ,a vertical Section through one ofthe supporting eers ofthe. oil leSsWOl. and taken substantially alone line. 3:6 of Fis l- `l'1 ,eferrin g1to the drawings,- this invention is illustrated as embodied in a sewing machine powertable comprising four less` Mihai/ing the two crossbraces Il welded to the upper portions of` the less- These` cross-braces, ll Support o table portion l2 `which is secured thereto by means of the bolts |43 and nuts I4. The. legs and crossfbraces preferably are made of sheet-4 metal and `the table portion; |52 preferably is of I wood; .the powerftable being constructed and assembled substantially as disclosed in. United States natectof. G- lvl. Eames. No- 1.695.@19. December. 1 8.. 19,23.

Securedfto theunder side of the table l2 by means ofthe bolts l5 amounts, 'Sis o' brooks# |l-,- to which is pivotally secured as atwl4 the usual electric tower transmitter i9 hoi/ins o driving pulley #which receives the helm l.- Prof looting from, ille @loner portion, oi the tower transmitter .unit 9i on erm 2? Carrying wie 2i into which is threaded a Screw-rod i@ pivotant carried as 25 by the from@ l Bvrrooe'ly turning the ontslihe transmitter l5 met?? swung about ltsp' i i8, illus i0, tension the belt 2| For o more. cosoleto description soldier closure, of; this irre of loew Poisoning devies reference. may he. had tothe United .States paient wt k.riesen UNO.` 2695,203,octcbrsjitsvf to .Figi 1 arid 15; the vided with on previos 2 6' hei/ieg 1 insert 28 Or the table l2.

analice a rabbet 21 thereabout for supporting a substantially rectangular wooden table-insert 28, which is also rabbeted as at 29 and adapted to iit into the power-table opening 26. A pair of 'camming type latches 30 are rotatably secured, by' means of screws 3i, to the bottom portion of the insert 28 for locking the sameto the table. Wear plates 32, secured to the bottom ofi the table l2 by means of screws 33, cooperate with the latches 3D in the locking of the insert '28 to the table.

The table-insert 28 is provided 4withfa ,cut-out 34 which is adapted to meet the requirements of the particular sewing 'machine' toA be used therewith. As illustrated in Figs; '1 and 3, the

table l2 is provided with a slot'35 which has' aligned therewith a slot 35 formed inthe insert 28 and complemental to the table-slot 35 to proas at 54 to the sewing machine 43. The crank 53 is in turn operatively connected wi-th a vertically disposed rod 53 which is adapted to actuate a sheet-metal base-plate 56 upon which is mounted a frame 51 carrying the usual driven pulley 58an'd bobbin holder 59. Disposed at the othergendo the base 56 is a sheet-metal plate 50 carrying a thread-guiding and -tensioning unitBI.

vide clearance for one run of the belt 2|. Clear'- ance for the other run of the belt is provided by a slot 36 formed in the insert-and connected by a'constricted slot 36 with the insert-slot 35. Substitute inserts each has its machine cut-out positioned in a manner such 4that each of the various classes of machines will have its beltreceiving pulley located in substantially the same vertical plane, thus permitting the power transmitter to be secured to the tablein one position at all times. A reversing switch (not shown) may be provided with each power transmitter to accommodate machines having diierent directions of rotation.

Referring to Figs. 3 and 6, ythe insert 28 is provided at each of the four corners of its cutout 34 with a shoulder portion 31 which is adapted to be engaged by and to support one ear portion 39 of an oil-containing reservoir 38. Oneof these ears 39 is provided at each of the four corners ofthe reservoir 38 and is illustrated in Fig. 6 of the drawings. Thus, it will be understood that the reservoir 38 may be inserted into the cut-out 34 from a position above the table I2 and that it is supported therein by means of the shoulder portions 31. The reservoir 38 is a substantially pan-shaped unit provided with a groove 4I) thereabout for the purpose of receiving a gasket of vibration and sound-absorbing material 4| upon which rest the depending'bed-plate walls l42 of a sewing machine 43. A pair of iioating hinge devices are provided on the present outfit to permit the machine to be swung backwardly to thus expose the reservoir 38. Each hinge set comprises a `'pin-member 44 disposed in a carrier portion 45 which is -recessed into the insert 28-and held therein by meansof a screw 45. A fork member 41 is carried by the machine 43 and it is-adapted to embrace the pin 44. The machine, therefore, is adapted to pivot backwardly about said pins 44. When the machine is in its operative'position, as illustrated in Figs. 1 andf5, the fork members 41 are disposed slightly above `and out of contact with the pins 44. The machine, while in operation, rests entirely upon the gasket 4l and has no direct engagement witheither the As illustrated in Fig. 5, the machine 43 and the reservoir 38 form a substantially enclosed and oil-tight chamber.

Formed on the bottom portion of the reservoir 38 are lugs 48 and 49 apertured to receive a horizontally disposed rock-shaft 58, to one end Vof which is secured the usual knee-shift lever 5l.

Movement of this lever causes Va pin 52carried in the reservoir to move endwise vertically foractuating a crank 53 which is pivotally--secured A slot 62 is formed in'the base 56 and receives a screw 53 which secures. the `attachment in juxtaposition to the driving belt 2l of sewing ina--L chine. For a complete description of the present type .of bobbin-winding attachment, reference may be had to theU. S. patent of J. D. Karle, No. 1,290,225, January 7, 1919.

From the foregoing ,description it is tobe understood that the presentV type of power-tableis constructed `with an `opening `25 which is adapted to receive anyone-oa plurality of interchangeable inserts, each having an appropriate ymachine-receiving cut-out `to lit a respective one yof the various machine classes. Thus a single power `table may bey usedin conjunction with a plurality of various types of sewing machines.

. Furthermore, it will be understood that-the'- type of sewing machinelis to be Vsubstituted for another, this insert unit may be removed and stored wi-thout dissassembling the component elements therefrom, thus savingthe time andV expense of khandling theunits as single elements. Having thus set forth fthe nature of the invention, what I claim herein is: Y Y l. A universal table-structure adapted to accommodate any one ofv a plurality of belt-driven sewing machinesy having bed-plates of diierent sizes and each having a presser-foot lifting device associated therewith, comprising a table-top hav-f ing an opening therein, a power-transmittingv drive supported by `said table-structure, anda plurality ofsewing machine supportingY inserts each -of which is adapted to be removably mounted in the opening in the said table-topsaid inserts each having a'cut-out-of-a size and shape to accommodate one of said sewing machinesiand to locate sadvmachine in a position such that' it. may bebelted toV said power-transmitting device, each of'said insertshaving amanuallyoperable device carried thereby for actuating said presserfoot lifter. Y' 1 f 2. In combination, a power-table adapted to accommodate. any one of a plurality of sewing machines having bed-platesof different sizes'and each having a presser-foot lifting device associated therewith, said power-table having a table Y having a cut-out of a size adapted to accommodate one of said sewing machines and -to locate said machine in a position such that it may be operatively connected to said ypower-transmitting device, and a manually operable presser-foot actuating device carried by said insert.

3. The combination with a sewing machine having a presser-foot lifting device, of a powertable having a table top provided with an opening therein, an insert removably secured within said opening, said insert apertured therethrough to accommodate said sewing machine, and means for actuating said presser-foot lifting device, said means being carried by said inser-t.

4. In the combination of a power-table having a table-top provided with an opening therein, a sewing machine adapted to be received within said opening and having a presser-foot lifting device, a power-transmitting device supported by said power-table, and means operatively to connect said power-transmitting device with said sewing machine; the improvement consisting in the provision of a unitary means for mounting Said sewing machine within said table opening,

said unitary means comprising, an insert adapted to be removably mounted within said table opening, said insert having a cut-out formed therein of a size and shape 4to accommodate said sewing machine, hinge means secured to said insert for pivotally securing said sewing machine thereto, and means carried by said insert for actuating said presser-foot lifting device.

5. In the combination of a power-table having a table top provided with an opening therein, a sewing machine adapted to be received within said opening and having a presser-foot lifting device, a power-transmitting device supported by said power-table, and means operatively to connect said power-transmitting device with said sewing machine; the improvement consisting in the provision of a unitary means for mounting said sewing machine `within said table opening, said unitary means comprising, an insert adapted to be removably mounted within said table opening, latching means for locking said insert to said table Itop, said insert having a lcut-out formed therein of a size and shape to accommodate said sewing machine, hinge means carried by said insert for pivotally securing said sewing machine thereto, and manually operable means carried by said insert and adapted to be separably engaged with said presser-foot lifting `device for the purpose of actuating the same.

6. A sewing machine power-table adapted to i accommodate Aany one of a plurality of sewing machines having bed-plates of different sizes, comprising, a table-top provided with an insertreceiving opening, a supplemental table-insert mounted in said opening and provided with an opening, a sewing machine having a bed-plate mounted in the opening of said table-insert, and a bobbin-winding device mounted on said insert in operative relation with said sewing machine. IRVING F. WEBB.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,183,366 Chason Dec. 12, 1939 2,376,648 Anderson May 22, 1945