US1099655A - Sewing-machine. - Google Patents

Description

J. LEATHER/L SEWING MAGHlNE. APPLIGATIONTILBD'JULY 5, 1912.

'l 099 655m mente@ Jun@ 9', 1914.

hehhn ease inte The extreme 1 li in sl'ightiy orinii g an i 1G, Gi'eriapping very siightiy the of the hohhin eaee, ani so hoidiiig; t hahhin ease in piace. lhe Overlap i' se siight, and the spring action of the Sp sides 01"' the hohbin case is sach, iirmlewei. that it is easy te 'force the hehhin ease inta or out ai the hoek, the Spring @idee mi the hehhin Case yielding' iightiy te permit this Upon the side ef the hohhin case T is secured a tene'an Spring 3.7, which is er". usual construction, except that it is pro- Tvided with a lip 3.8 prnjeficting in a direc tien suhstantiaiiy paadei with the rotative action ef' the strectiire, and is adapted to he engaged hy ay crew l?) mounted in a suitable screw hole in the edge f1 nge et hohhin Case. Ty tzr r ntf this screw 19 in er out, the tension eXer ,i hy the Spring; l? upon the thread may he varied desired.

The hoek 1 is provided in its side with suitable openings 2l through which a Suitahie instrunient magY he intreduced' to pry the hnhhin case mit of said hook. n inserting; the hohhin ease inte 'the hoek the pres- /snre oit the ingers sufficient te press it l/heine it is very desiahie that heeks or hieptaiiers :auch is shown in the drawings, shaii he in rotative haiance. The thread slot iightens the' hoek considerably on one side, and unless a eorrespending amount et' metal he taken outsahstantiaiiy diemetricady ep- 1hesite the hook out of haianee. have found that the heet way to eounterhaianee fm hook 'to compensate fer the absence et ea e e i nwardiy tu l metal incident te the thread slet G, is wref duce the thickness of the meta of the side of the loep-taker dizzmeti'ieaiiy crepes'. e the thread sint, To this end, and as is show partieiiiarly in Fig. 8 the sides of 'ti loep taker are (.rhanaheredv ont or eut away hetween peints 22 and 28, on the side ofthe Loop taker opposite thread shit 6,

To remove the hohbin from the hoek, a suitable instrument is introduced 'through @ne of the openings Q1, between the bottom of the bohhin Case and the betteln wail oi the hook.y and one of the hohhin ease is pried out, the spring leaves forming the greater portion O' the side oi the bohhin ease yielding to permit this. lt is then easy to remove the bobhin ease; and of course, once the bohhin case has been removed from the hook it is easy to remove the behhin rein the bohoin case.

In replacing' the parte, the bobhin is placed Within the hehhin ease, and the hitter iethen pinned Within the hook and pressed home, the A"infr sides 'of the bohhin ease the ici-enge to pass the rib i6. i

To facilitate.

eohhn, from Lhihll' loves Q unending frein th hahhin mitte the sev-eral heiee desired to .i me r hohhin fr ein a neej' 5*"iiinent is intr 5 under the top Piate o hin and then hf; this need'ie er athe nient the hehhi` ineif he willed out. van he dene 'i but :m5T eiittinpp o wea. wound upon the. In the side th This ihech Withth e thread hin. e hohhin prnxiinitv te 'the tension spi-gin.

thread 5mt :23, the enter ein :z hin (fr ist proiided with a phir f-ine'i ziread retainiii' groei 'ire finite shalt size as aV 'i pta t ieni to heid mamen needie iiii'ead er 'top thref fr iviiiie i around the hnhilin CaSe e known, the action or a fiordi ieh eerihefh and of its hehbin can eedie thread er 'iep Baring 'the retaimi d i zip-takers the. haai; pases .C Y' 4 Lght or hiep m the n needle thread deiifn te the hase slet C; 1"@ eth needie thi more or the hehhin )ehhin k. Exte'pt for the 'thyead retaining groei-'es 2T et the hebhin ease, hoth sii 'i the hight ef needie thread 'wii he carried around ti hnhnii'i e; se Without pass t und-erw th tie techhin and so without engaging the underneath the i of? from the haa -d the eieet o 'which is to carry one side of the hight ef the ioop of nedie thread in Giese to the Side of the hehhin ease, so Causing the needie thread to engage one or another of the thread re 'aining gre-eres er" 'that hohbin @ne advantage et the construction of hohhin ease herein described, e'. e., the provision of a iarge numher er spring ieaves in the.

side of the bebhin ease, is, thea; in cese the the thread Looeot bobbin case becomes Worn or the racewey of the loop-hiker l becomes Worn, to such extent that the bobbin ease might Hy out ot' the meeway, it is easy by removing the bobbin, and inserting a suitable tapered mandrel in the bobbin case, to spring out the sides of the bobbin case, giving them a permanent set, snliicient to cause thern to engage properly in the groove of the loop-taker.

1*That I claim is:

l. The combination with a hook, oi' n bobbin cese adapted to lit within' seid hook,

Vsaiol bobbin ense having side slits forming,

in seid side, springs, said hook having a. rib which said side springe are adapted to en gage when the bobbin cose is in place Within the hook, whereby bobbin 'ease and hook are normally held together.

2. The combination of a hook and bobbin case, the hook adapted to' receive the bobbin ease Within it and having a rneeway for such bobbin @use and having, beyond seid racewoy, an inwardly projecting rib, the bobbin ease, having a projecting :flange adapted to work Within Said rueewuy und to engage said inwardly projeetinglrib et' the hook, said bobbin case having' iii-A. ite eide slits dividing said sides into springlenves, whereby the bobbn case is helct Within the hook by'jengagenient of said springM leaves with the inwardly projecting rib of the hook.

3. A., hobbin ense comprising a hollow' member adapted to receive a bobbin :1nd to fit Within a hook said bobbin euse having in its sides, slits dividing auch sides into spring provided with spring means for retainino' thel bobbin ense within the hook, said hooh provided with en aperture adapted for the insertion of an instrument between the bottoni of the bobbin ease and the bottom Wall of the hook, whereby lthe bobbin ease may be pried ont of the hook by .fm instrument introduced through such aperture.

In testimony whereof have signed this specification in the presence of two subscrbing witnesses.

JAMES LEATHEM. `/l/rtnesses t H. M. MARBLE, l), A. Duras,

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