Патент USA US2105355код для вставки
Jan. 11, 1-938. P. P. KESSLER 2,105,355 SEWING MACHINE FRAME STRUCTURE Filed Feb. 10, 1936 3 Sheets-Sheet l Jizmsvz‘fa‘r: ?zafffeaafer: ,. [Z @W ' . W Jan. 11, 1938. P. P‘ KESSLER 2,105,355 SEWING MACHINE FRAME STRUCTURE Filed Feb. 10, 1956 5 Sheets-Sheet 2 0274a; Jan. 11, 1938. P. P. KESSLER 2,105,355 SEWING MACHINE FRAME STRUCTURE Filed Feb. 10', 1936 ---------¢_ // J6 3 sheets-jsheet 3 ‘Patented Jan. 11, 1938 2,105,355 " UNITED STATES PATENT OFFICE 2,105,355 sawmo momma FRAME srnuc'runn _Paul P. Kessler, Chicago, 111. Application February '10, 1936, Serial No. 63,048 6 Claims. (01. 112-258) . My invention relates to a sewing machine frame structure. Among the objects of my invention are the following: to create a sewing machine frame 5 structure having an upper portion so attached to a lower portion as to permit both lateral ‘and vertical movement of the upper portion with re- ' lation to the lower portion thuspermitting both desired o?' center stitching and the accommoda 10 tion of di?erent thicknesses and kinds of mate rials, and such other objects, advantages and ca pabilities- as will later more fully appear and which are inherently possessed by my invention. While I have shown in the accompanying draw 15 ings a preferred embodiment of my invention yet I wish it understood that the same is susceptible of modi?cation and change without departing from the spirit of my invention. Figure 1 is a side elevation of the sewing ma 20 chine embodying the several features of my in vention. I Figure 2 is a front elevation of the same. Figure 3 is a rear elevation of the same. _ Referring more particularly to the embodiment 25 selected to illustrate my invention, it comprises a arm normally in engagement with member I‘ to impart movement to member 18 upon pressure being applied to lever l9. 0! course the adjust ment through members II and i6 is to provide lifting clearance during the sewing operation in- 5' dependently of the lifting by lever l9. This in sures not only proper clearance but proper pres sure on different thicknesses andkinds of ma terials to the highest degree of accuracy. The lower portion ll of the frame l0 houses 10 the feeding mechanism 31. of the construction defined and‘ claimed in my co-pending applica tion, Serial No. 78,051, filed May 5, 1936. Having thus described my invention I claim: 1. In a sewing machine frame structure. a body 15 member' having a lower portion and a separate upper portion, and adjustable means movably attaching said lower and upper portions, said means permitting lateral adjustment of the upper portion for desired off center stitching. 20' 2. In a sewing machine frame structure, a body member having a lower portion. and a separate upper portion, and a pair of adjustable hinge screws for movably attaching said lower and upper portions, said hinge screws, permitting lat- 25 frame Ill of two partshaving a base or lower‘ eral adjustment of the upper portion for desired portion H, and an upper portion l2, movably at tached to said base H by a pair of adjustable . hinge screws. l3. By the use of my adjustable 30 hinge screws I 3, I am able to move" the upper portion l2 of‘ the frame Ill laterally, either to ‘the left or to the right so that the stitching mem ber 65 is thereby positioned of! center for the purpose of stitching in a desired off center man 35 ner. Integral and extending from the rear of the upper portion I2 of the frame I0 is an exten sion l4, having a hole ii, for receiving a bolt H. A member 16 preferably extends through an open portion of the lower portion II and contacts 40 lever l9 which is fulcrumed on shaft-l8. Adja cent its upper end member l6 has a slot 1| slid ably receiving bolt 11. Prior to adjustment, bolt I 1 is loosened so that member I 6 may be moved so that bolt I1 is in the desired position within 45 slot ‘H. When the bolt I1 is tightened, member 16 is positioned to correctly allow the desired lifting clearance of the upper portion l2 as it is lifted vertically and arcuately to accommodate the desired thickness of material. Bolt I‘! may 50 be loosened whenever desired and member I 6 moved so that bolt I1 is located‘in a different position within slot ‘H and then tightened for permitting a different desired lifting clearance. The lifting operation is effected through lever 55 I9 ‘which is fulcrurned on shaft l8 and has one o? center'stitching. 3. In a. sewing machine frame structure, a body having a lower portion carrying a feeding mechanism, and an upper portion carrying a 30' stitching mechanism, adjustable means for at taching said upper portion to said lower portion to permit both lateral adjustment of said upper portion with respect to said lower portion for desired oif center stitching, and also vertical 35 movement of said upper‘ portion with respect to said lower portion to accommodate different thicknesses andkinds of material, said upper portion adapted to act of its own 'weight'as a pressure means during a sewing operation. 40 4. In a sewing machine frame structure, a body having a lower portion carrying a feeding mech anism, and an upper portion carrying a stitching mechanism, adjustable means for attaching said upper portion to said lower portion to permit both 45 lateral adjustment of said upper portion with re spect to said lower portion for desired oil.’ center stitching, and also vertical movement of said upper portion with respect to said lower portion to accommodate different thicknesses and kinds 50 of material, said upper portion adapted to act of its own weight as a pressure means during a sewing operation, adjustable means attached to said upper portion for controlling the desired lifting clearances of the upper portion with re- 55 2 ‘2,105,365 spect to the lower portion and manually operable means for lifting said upper portion. 5. In a sewing machine frame structure a lower portion, an upper portion, means for movably attaching the upper portion to the lower por tion, said upper portion having an extension, said extension having a bolt, a member having a slot, said bolt slidable within said slot and adapt~ ed to be tightened at any desired position within said slot so as to permit desired lifting clearances of the upper portion with respect to the lower 6. In a sewing machine frame structure, a body member ‘having a stationary lower portion carrying a feeding mechanism and a separate upper portion carrying a stitching mechanism, a hinge for attaching the upper portion to the lower portion to permit vertical movement of the upper portion and the stitching mechanism‘ it carries with respect to- the lower portion and its feeding mechanism, said upper portion adapt ed to act of its own weight as a pressure means so that during the sewing operation the stitching mechanism will automatically adjust itself to portion for accommodating di?erent thicknesses of material and manually operable means en i apply the proper pressure on di?erent thicknesses gageable with said member for lifting said upper and kinds of material. , ./ ' portion. ‘ ' PAUL P. KESSLER.