US611011A - Jacquard mechanism for embroidering machines - Google Patents

Description

N0. eu,0||. Patented Sept. 20, I898. H. HILL.

JACQUARD MECHANISM FOR EMBROIDERING MACHINES.

(Application filed Jan. 28, 1897.)

(No Model.) 3 SheetsSheet l.

N0. 6l|,0ll. V Patented Sept. 20, I898.

H. HILL. JACOUARD MECHANISM FOB EMBBORDERING MACHINES.

(Application filed Jan. 28, 1897.)

(No Model.) 3 Sheets-Sheet 2.

Patented Sept. 20, I898.

Nu. sn,on.

H. HILL.

JACQUARD MECHANISM FOR EMBBOIDEBING MACHINES.

1 (Application filed Jan. 28, 1897.) (NoModeL) 3 Sheets-Sheet 3.

UNITED STATES PATENT OFFICE,

HENRY HILL, OF NOTTINGHAM, ENGLAND.

JACQUARD MECHANISM FOR EMBROlDERlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 611,011, dated September 20, 1898.

Application filed January 28, 1897. Serial No. 621,102. (No model.) Patented in England February 6, 1896, No. 2,751; in Germany August 8, 1896, No. 91,184; in Switzerland November 14, 1896, No. 13,399; in Austria December 18, 1896, No. 47/335, in France December 24, 1896,11'0. 262,541, and in Belgium December 29, 1896, No. 125,419.

To all whom it may concern.-

Be it known that I, HENRY HILL, a subject of the Queen of England, residing at Nottingham, England, have invented certain. new and useful Improvements in or Relating to Jacquard Mechanism for Embroidery-Machines, (for which I have obtained Letters Patent in Great Britain, No. 2,751, dated February 6, 1896; in Germany, No. 91,184, dated August 8, 1896 5 in Switzerland, No. 13,399, dated November 14, 1896; in France, No. 262,541, dated December 24,1896; in Austria, No. 47 335, dated December 18, 1896, and in Belgium, No. 125,419, dated December 29, 1896,) of which the followingis a specification.

This invention relates to improvements in jacquard mechanism such as that described in the specification filed with United States application of July 14, 1896, Serial'No. 599,129, for automatically moving the fabric-frame each stitch in any direction required.

The object of the present invention is to provide more perfect and convenient means for moving longitudinally each of the two double racks G G and L L, described and shown in the specification cited. The longi-' tudinal movement of-each of the racks is converted into the rotary motion of a pinion engaging therewith, and the rotary movement of the pinion being communicated to a screw or a nut thereon the screw is moved longitudinally, and this movement is communicated to the embroidery-frame to which the said screw is connected. The length of the longitudinal movement of the screw is determined by the angular distance through which it or the nut is rotated, and the latter is determined by the longitudinal movement of the corresponding rack. The direction in which each screw or nut is rotated is determined by putting the pinion into engagement with one or other of the two racks.

The improved mechanism is arranged to automatically move each double rack longitudinallyaspace equal to one, two, or more teeth, as required, and it is designed so as to give the long or short movements with equal smoothness andwithout the jerks or shocks which invariably accompany the use of droppers or distance-pieces in order that the machine may be run at a higher speed than has hitherto been practicable and the rate of production increased.

The invention will be best understood by reference to the accompanying drawings, in which Figure 1 is a side elevation, and Fig. 2 an end elevation, of jacquard mechanism constrncted according to my invention. Fig. 3 is a vertical cross-section taken on line X X of Fig. 1. Figs. 4, 5, 6, and 7 are views showing part-s drawn to a larger scale than in Figs. 1 to 3.

Like letters indicate like parts throughout the drawings.

The framing of the apparatus is formed by two standards A A, connected by three crossstays B B B 0 is a transverse shaft from which the whole of the requisite movements of the apparatus are obtained. This shaft 0 is carried in bearings 0, formed in or secured to the standard A A.

The apparatus is placed in a convenient position, preferably at one-end of the embroidery-machine, and the shaft 0 connected by suitable gearing to the main shaft of the said machine.

D D are two parallel shafts which are mounted loosely and slide longitudinally in a bracket -bearing D, secured to the crossstays B and inbearings D formed in or secured to the cross-stay B.

Secured to each shaft D is a diagonal frame E, (see Figs. 1, 3, and 4,) provided with a corresponding number of steps, and connected to each of the said frames E is a corresponding number of pivoted jacks or arms F, provided with hooks or catches, the said jacks being arranged in step-like series, as shown,

The jacks or arms F are connected to the frame E by adjustable brackets E (see Figs. 1 and 4,) in which: the jacks or arms F are pivoted, each of the said brackets being secured to a different step on the frame E. The jacks or arms are thus not only arranged one above the other, but are also each arranged in an independent vertical plane.

The upper ends E of the frames E engage in a longitudinal slide E secured to the crossstay 13. This slide is placed parallel to the shafts D and prevents the frames E and the shafts D from rotating about the axes of the latter.

G is a swinging frame which is pivoted at G in bearings G secured to or formed in the standards A A. This frame is reciprocated between the dotted extreme positions indicated at H II by a cam, or, as shown, by a crank C on the main shaft 0 and a connecting-rod I. The frame G approximates in form to the space occupied by the jacks F and is formed with an opening at each side to receive each set of the said jacks. These openings are formed with steps in the same manner as the diagonal frames E, and each step is provided with a stud or projection J, adapted to engage with the hook of the corresponding jack. The studs J in each set are thus equal in number to the jacks F in each set and are disposed so that the hook of each jack, when the latter is raised, will engage with its corresponding stud J. The studs J in the frame G, it will be seen, are arranged at gradually-increasing distances from the pivot or fulcrum G, and each will thus move through a different space, the amplitude of which is determined by its distance from the pivot or fulcrum G. For example, the hook of the upper jack, marked No. 1, (see Fig. 5,) when raised will engage with the upper stud, which is also marked No. 1. The hook or the jack No. 2 when raised will engage with stud No. 2, and so on throughout. It-will be seen that No. 2 stud being farther from the fulcrum G of the frame Gthan the stud No. 1 it will move a greater distance than stud No. 1, and it therefore follows if No. 2 jack be raised it will engage with No. 2 stud and be moved a greater distance than 1 0; 1 would have moved had the same been raised and engaged with its corresponding stud No. l, and a less distance than No. 3. It will also be seen that the whole of each set of jacks F, from Nos. 1 to 18, being secured to one frame Eand the latter to the shaft D, the said shaft and frame E and the whole of the jacks in the set will be moved the same distance as the jack which is raised and is thus put in action.

The distance of each of the studs J from the fulcrum G is preferably arranged so that it No. 2 stud is brought into action it will move the shaft D twice the distance it would be moved if No. 1 were brought into action, No. 3 three times the distance of No. 1, and so 011, so that if No. 1 stud moves the shaft a distance equal to one unit or tooth of the rack No. 2 will move it two units or teeth, and so on. It is therefore only necessary to raise one jack F for each movement in order to move the shaft D the requisite distance.

The position of the hook F of the jacks F is arranged in line with the frame G when the latter is in the extreme position shown at 11, Fig. 1, so that whichever jack is raised it is immediately engaged by its corresponding stud on the frame G, and the movement of the said jack is then identical with that of the stud with which it engages throughout. l/Vith this arrangement there is no jerk or shock either at the commencement or finish of the movement of the shaft D. The shafts D D may be connected to the racks in the same manner as described in the specification cited or by other convenient means.

The jacks F are each raised by a vertical needle K, Figs. 3 and G, the whole of which are mounted in a top slay secured to the standards A A, and a triangular slay M, secured by a bracket M to the cross-stays B The upper ends of the vertical needles K are connected by threads K to the vertical needles of a jacquard of any well-known and suitable construction.

Springs K are preferablyinterposed between the jack-threads K and the vertical needles K in order that the selecting-needles in the jacquard may be raised at any point in the movement of the frame G or at a point where the jacks F are held down by the frame G. When the frame G returns to the position shown at H, the jack whose corresponding selector-needles in the jacquard have been previously raised will be raised by the action of the spring, and its hook will engage with its corresponding stud J on the frame G, and a higher speed may thus be obtained. With this arrangement the whole of the time occupied by the return movement of the frame G may be employed for the selecting movement of the jacquard, and the movement is consequently smoother.

Similar means may also be provided in connection with the above construction for moving the pinions into gear with the racks to those described in the specification cited. Four jacks N N N N are pivoted to corresponding rods T T T T the latter being connected in pairs to the two opposite ends of the pivoted pinion-levers. The jacks N are pivoted at hooks or catches N (see Fig. 7,) which normally engage with studs 0 on the two reciprocating arms 0, secured to the shaft, which latter is carried in bearings P, secured to or formed in the standards A A. The jacks N, which are to be inactive, are raised clear of the studs 0, as shown in Fig. 7, by jack threads Q, which are connected to vertical needles in the jacquard. The arms 0 are reciprocated by a cam R on the shaft C through a lever B, connected to one of the arms 0 by a link R The jacks N are returned to their normal position after each movement by springs S, acting on the rods T T T T I claim 1. In a fabric-fran1e-moving mechanism for embroidery-machines the combination with the main frame, the stationary frame, the hooked jacks pivoted to said frame, one above the other but in different vertical planes, connections between the said pivoted jacks and the fabric-frame the swinging frame having pins at varying distances from its fulcrum adapted to engage with the hooks on the jacks the vertical needles and connection between said needles and the vertical needles of the jacquard, substantially as described.

2. In a fabric-frame-movin g mechanism for embroidery-machines the combination with the main frame, the two diagonal frames, each provided with a corresponding number of steps, the jacks pivoted to each of said steps arranged diagonally with respect to a Vertical line, connections between said pivoted jacks and the fabric-frame, the swinging frame having openings to receive the jacks, said openings formed with steps corresponding to the steps of the diagonal frames, and each provided with a pin with which the hook on the corresponding jack is adapted to engage, said pins arranged diagonally with respect to a vertical line, the vertical needles and connections between said needles and the vertical needles of the jacquard; substantially as described.

3. In a fabric-frame-moving mechanism for embroidery-machines the combination with the main frame, the diagonally-arranged frames the hooked jacks pivoted thereto,

arranged diagonally with respect to a Vertical line the swinging frame having the pins at varying distances from its fulcrum said pins arranged diagonally with respect to a vertical line and the vertically operating needles adapted to lift the jacks to engage the pins of the swinging frame; substantially as described.

4:. In a fabric-frame moving mechanism for embroidery-machines the main frame the diagonally-arranged frame, carrying the hooked jacks, arranged diagonally with respect to a vertical line the swinging frame having the pins, arranged diagonally with respect to a vertical line, the vertically-moving needles operated by the selector-needles, of the jacquard and springs interposed between the vertically-moving needles and the selectorneedles of the jacquard; substantially as described.

In testimony whereof I have hereto set my hand in the presence of the two subscribing witnesses.

HENRY HILL.

Witnesses:

HAROLD CoADY, HARRY B. BRIDGER,

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