Patent GB-374666-A (GB)
Title: Improvements in embroidering machines making flat stitches imitating hand made embroidery
IPC: D05C7/00
Filed: 1931-07-17
Abstract: 374,666. !Sewing-ma-- chines. ANCIENS ETABLISSEMENTS R. CORNELY ET CIE SOC. ANON., 87, Faubourg St.-Denis, Paris.- (Assignees of Chiti, A. ; 5, Via Consolata, Turin, Italy.) July 17, 1931, No. 20525. Convention date, July 18, 1930. [Class 112.] Universal-feed machines.-An embroidery machine of the Cornely type for making flat stitches simulating hand stitches, can execute stitches of variable length and can use two threads, one thread stretching underneath the fabric over a length corresponding to the sum of the length of the normal stitches made by the other thread during the time the first thread is idle. The work plate 1 is provided on its underside with the thread distributer consisting of a shaft 2, worm 4 and a gear wheel 5. This shaft is hand controlled by the cranked handle 8 and gears 7, 7<1>. The gear 5 rotates an eccentric 10, Fig. 5, which works a link 11 carrying a guide 13 rotating about a pivot 14. The free end of the link 11 has a member 17 with the three small tubes 18, 18a, 18b of the distributer. The support 15 tends to be rotated by springs 20, Fig. 6, to bring the tube 18b under the needle plate. A rod 22 adjustable in length is connected to the support 15 and to a shaft 24. The shaft 24 has an arm 27 with a roller 28 which runs round the periphery of a cam 29 which is shaped so as to cause the rod 22 to pul. the support 15 to bring the desired tube 18, 18a, 18b under the needle plate at the desired moment, for the supply of thread of a desired thickness or colour. The cam 29 is removable for replacement by cams for other patterns. The movement of the cam 29 is controlled for varying the thread supply by a change speed device of the gear-box type operated in the usual way by a lever. A hand-operated feed regulating device is provided. This cons-sts of a pivoted arm 43 kept in contact with the end of a rod 45 by a spring 44. The reciprocation of the rod 45, Fig 4, controls the displacement of the foot 46, Fig. 1. The support 41 cf the arm 43 also carries a lever 50 to which s fixed the spring 51. When the lever 50 is pushed in a forward direction so as to occupy the position 50<1>, Fig. 4, the lever 48 rotates ir.to the position 48<1>, in which it prevents the cam 43 and consequently the rod 45, from mov.ng upwards so that the foot 46 no longer moves and the fabric is not fed. The length of the feed of the fabric is controlled by the device shown in Fig. 22. The sliding piece 115 acts in known manner on the presser foot through, a cam 116 which is keyed on the shaft 31 and comprising as many active sections as the cam 29. The cam engages the piece 115 through a roller 118a and lever 117 which controls the rotary movement of the shaft 118. A lever 119 on the shaft acts as a lever 120, the other end 9 which engages a projection 115a of the piece 115. By a piece 122 adapted to slide in grooves in levers 119, 120 and adjustably secured therein by a milled knob, it is possible to adjust the intensity of action of the cam to determine the length of stitch. Fig 10 shows the arrangement for forming stitches of any desired length by a knee lever 57. An arm 53 keyed on the shaft 24 carries a roller 53 against which bears a cam 54 keyed on. the shaft 55. Another arm 57 is keyed on the shaft .55 provided with the knee plate 58. When the arm 57 is displaced by the knee, the projecting part of the cam 55 engages the roller 53 of the arm 52 and pushes it downwards, causing the shaft 24 tip displace the support 15. The cam 29 may be disconnected. by a clutch so that the machine makes an ordinary chain stitch.