US1175492A - Embroidering-machine. - Google Patents

Description

C. WALTHER;

EMBROIDERING MACHINE.

'APPLICATION FILED DEC-19,1913- l,l75,492, Patented Mar. 14,1916.

2 SHEETSSHEET I.

THE COLUMBIA PLANOGRAPH co., WASHINGTON, 0. c

C. WALTHER.

EMBROIDERING MACHINE.

APPLICATION FILED DEC.19,19|3.

l 1 75,492 Patented Mar. 14, 1916.

\\ 2 SHEETS-SHEET 2.

THE COLUMBIA PLANOGRAPH C0.. WASHINGTON, D. c.

rin'rrnn smarts PATENT names.

CARL WALTHER, OF CHElVINITZ, GERMANY, ASSIG-NOR TO THE FIRM OF SCHUBERT & SALZER MASGHINENFABRIK AKTIENGESELLSCHAFT, 0F CHEMNITZ, GERMANY.

EMBRO'IDER-ING-MACHINE.

Specification of Letters Patent. pgtgntgd 1W 14 19145 Application filed. December 19, 1913. Serial No. 807,675.

To all whom it may concern:

Be it known that I, CARL WALTHER, a citizen of the German Empire, residing at Chernnitz, in the Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Embroiderin -Machines; and I do hereby declare the following to be a full, clear, and exact description ofthe in: vention, such as will enabl-eothers skilled in the art to whichit appertains to make and use the same. p

My invention relates to improvements in embroider-mg machines and the like, and more particularly in the arrangement of the panto-graph of embroidering machines by means of which the pattern to be embroidered is transmitted to the frame carrying the goods being embroidered so as to pro duce thereon the desired pattern.

The object of the improvements is to construct the means for fixing, the pantograph in such a way, that the point of the pantograph is not pressed out of its proper position when fixing thepantograph, that the operative field of the pantograph is not limited by applying thereto thefixing means, that the friction of the pantographis reduced to a minimum and the operation of the apparatus is easy, and that the panto graph can be fixed in a reliable wayand is not loosened by operating theframe carryingthe goods, putting thereon other goods, etc. I

lVith this object in view my invention consists in providing special means for simultaneously fixing the pantograph against horizontal and vertical movements and providing means for independently fixing the pantograph against said movements.

By providing my improved fixing means the field of operation of theembroiderer is not interfered with, the pantograph is fixed in a reliable way, because the members to be fixed are subject only to strains acting in one direction, that is either to tension or to pressure, and the apparatus does not accidentally loosen itself.

For the purpose of explaining the invention several examples embodying the same have been shown in the accompanying drawings, in which the same letters of reference have been used in all the views to indicate corresponding parts.

In said drawings Figure 1, is a side view of a part of an embroidering machine and the pantograph provided with my improved fixing means, Fig. 2, is an enlarged plan View of the fixing means, Fig. 3, is a view of a modification of the fixing means, Fig. i, is a side view of an embroidering machine provided with means for operating the fixing, means from different parts of the ma chine, Fig. 5, is a plan view of the fixing means shown in Fig. 4.

InFigs. 1 and 2 I have shown my invention as embodied in a machine of known construction. As shown on brackets 2 secured to the frame 1 of the machine a pattern board 3 is mounted. The pantograph consists of links 4., 5, 6 and 7 which are j ointed to one another in the usual way. The link at extends to the pattern board 3 and it is provided with a handle 30 for operat ing the pantograph. The link 7 extends beyond the joint of the link 6 and it is connectedwith the frame8 adapted to carry the goods being embroidered. At the joint of the links 5 and 6 the pantograph is mounted on a bracket 9 secured to the frame I of the machine.

The link 6 is in the form of a bell crank lever the arm 10 of which is jointed to a bar 11. To the link 5 a bar 12 is jointed. Wherethe bars 11 and. 12 cross each other a bracket 13 is secured to the frame of the machine the end of which carries a U-shaped member 14 pivoted to said bracket having a rocking but no shifting movement longitudinally of the bracket. On the bracket 13 a shaft 15 is mounted which is provided with two rollers 16 and 17. Adjacent to the opposite ends of the shaft 15 and in front thereof two studs 18 and 19 are provided on the bracket 13.

The ends of the member 14 are in the form of internally threaded eyes or nuts having screws 20 and 21 screwed therein, which screws are located coaxially of the studs 18 and 19. The screw 20 carries a hand wheel 22. The bars 11 and 12 bear by gravity on the rollers 16 and 17, and they are guided at their sides by the studs 18 and 19 and the screws 20 and 21.

In the example shown in Figs. 1 and 2 the bars 11 and 12 are fixed or clamped in position by turning the hand wheel 22 to the right and thereby forcing the screw 20 in the direction toward the arm 13. As the screw is mounted on the member 1 1, and the latter carries at its opposite end the screw 21, the bars 11 and 12 which are engaged respectively between the screws 20 and 21- and the studs 18 and 19 are clamped. The bar 11 which is pivotally connected to the arm 10 of the bell crank lever 6, 10 is provided to lock the pantograph as against horizontal movement, while thebar 12 which is jointed to the link 5 locks the pantograph as against vertical movement. Both bars are subject only to longitudinal strains and either to tension or to pressure, so that the pantograph is fixed by the clamping action of the screws in a reliable way. The pantograph which has thus been clamped in position can not be shifted in any direction, and it can not he accidentally loosened.

. In Fig. 31 have shown a modification of the clamping means. As shown also the screw 21 is provided with a hand wheel 22, and the hand wheel 22 effects clamping of the bar 11 only, while the bar 12 is clamped by the hand wheel 22 secured to the screw 21. vvThe member 141- is rigidly secured to or made integral with the bracket 13. lVhile the weight of the pantograph is increased by the means for fixing the same in position, it will readily be understood that this increase can easily be reduced to a minimum or even made entirely ineffective by methods known in the art. For example, the bars may be made light by constructing the same of light material such as aluminum. Or the weight may be balancedby'counter-weights. By guiding the bars 11 and 12 on rollers the friction is reduced to a minimum, so that the operation of the'pantograph is easy.v While in the example shownin Fig. 3 the hand wheels 22 and 22" are secured to the screws 20 and 21 respectively for direct operation of the latter, I wish it to be understood, that my invention is not limited to such means for direct operation of the 25 is secured to the screw 20. At the same height with the said sprocket wheel and at the opposite side of the embroidering machine a sprocketwheel 26 is mounted which is connected with the sprocket wheel 25 by a continuous rope 27 At the opposite ends of the said rope chains are provided which engage on the sprocket wheels 25 and 26. By moving the rope in one or the other direction the screw 20 can be screwed into or out of clamping engagement with the bar 11 so as to clamp or release the bars 11 and 12, as has been described with reference to Figs. 1 and 2. I

I claim herein as my invention:

1. In an embroidering machine, the combination with the movablefabric frame and the pantograph for moving it, said pantograph including two pivotally connected members; of two elements, one pivotally connected to each of said members, and means to hold said elements against movement. 7

2. In an embroidering machine, the combination with the movable fabric frame and the pantograph for moving it, said pantograph including two pivotally connected members; of a bar pivotally connected to each member, said bars crossing one another, and means arranged at the crossing to clamp the bars.

3. In a machine of the class described thetwo directions, two members connected to said pantograph and provided one for looking the same against movement in one direction and the other one for locking the same against movement in the other direction, locking means for said members, and operating means for said locking means extending over the length of the machine.

5. In a machine of the class described the combination with a movable frame for carrying. the work, of a pantograph connected with the frame and having movements in two directions, two bars connected to said pantograph and provided one for locking the same against movement in one CllIGCtlOIL and the other one for locking the same against movement in the other direction,

and clamping means for said bars comprising relatively fixed abutments engaging said bars each at one side, a rocking member engaging the bars at the opposite sides thereof, and a screw in said rocking member ar-- ranged for engagement with one of the bars.

6. In an embroidering machine, the combination with the pantograph thereof including two pivotally connected members;

of a bar pivotally connected to each member and movable with the pantograph, means to support the bars in crossed relation, an abutment adjacent each bar, and means to clamp the bars against the abutments.

7. In an embroidering machine, the combination with the pantograph thereof includ ing two pivotally connected members; of a bar pivotally connected to each member, a bracket having guides thereon for said bars adjacent their crossing points, abutment studs on said brackets adjacent said crossing points a U-shaped member pivoted on the bracket and movable abutments in said U- shaped member opposite said studs.

8. In an embroidering machine the combination with the pantograph thereof in cluding two pivotally connected members;

of a bar pivotally connected to each of said members, a bracket having a bar guide on its opposite sides, studs for the bracket substantially at the crossing point of the bars, a member on the bracket having an adjustable abutment in one end and a rotatable operating abutment in the other end, said abutments cooperating with said studs to clamp the bars between them upon operating the operating abutment and endless means extending across the machine for rotating said operating abutment.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

CARL WALTHER. Witnesses:

MARTHA ROTI-IE, HANS MiioKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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