Patent GB-190101779-A (GB)
Title: Improvements in Lace-making Machines.
Inventor: MATITSCH AUGUST
Filed: 1901-01-25
Granted: 1902-04-25
Abstract: 1779. Matitsch, A. Jan. 25. Lace machines.-Relates to machines for making pillow lace of the t y p e described in Specifications No. 3987, A.D. 1897, No. 16,971, A.D. 1897, No. 20,540, A.D. 1898, and No. 16,669, A.D. 1899. The usual slides B<1>, B<2>, B<3>for operating the pushers P<1>, p<2>, p<3> are not lifted by jacquard cords, as heretofore, but by means of lifting-bars b<1>, b<2>1, b<2>2, b<3> having at intervals projections h, Fig. 2. These lifting-bars, 96 in each group in the machine taken as an example, are carried in guides on arms H' on a shaft D<1> suitably rocked to raise and lower the bars b<1> &c. The bars B', B' have projections a<1>, a<3> arranged in twelve e vertical longitudinal planes over the lifting-bars. The lifting-bars are moved longitudinally by bottom bar jacquards, and, whenever a projection h comes under a projection a', a<3>, &c., the corresponding slide B<1>, B<2> is raised, thus controlling the motion of the pushers. Owing to the fact that the raising of a bar B' or B<3> has a different effect on the pushers P<1> or P<3>, the cards of the jacquards operating the bars b<1> and b<3> can be examined for faults by inspecting them when placed one on another. In order to save time, the carriages are moved out of or into the middle comb C<2> at one operation. This necessitates two sets of lifting-bars b<2>1, b<2>2 and jacquards for the slides B<2>. The lifting-bars act on pawls K<2>1, K<2>2 pivoted to the slides B<2>, and not on the slides themselves. The various slides B' &c. are moved to and fro by the customary bars M<1>1, M<1>2, M<1>3, M<1>4. The pivots G<1>, G<2>, G<3> of the pushers P<1> &c. are placed in slots iu the bars B<1> and retained by thin riveted side plates. Each pusher and needle can be removed separately. There are three sets of needles n<1>, n<2>, n<3> for lifting the crossings of the threads. The main needles n<3> are moved horizontally to insert them under the crossings by bars B<4> moved by a rocking bar M<4>5. when selected by a jacquard and lifting-bars b<4> ; they are moved vertically by means of bars B<5> and a rocking lever M<5>1 acting on projections N<5>1. The bar M<5> raises the needles to a zero position. The needles can be raised to one of twenty other positions above the zero by means of a bar M<5>2, which acts on one or other of the steps on a pawl K<5> which is raised by means of cords S<5> secured to the projections h of a set of lifting-bars b<5> operated by a jacquard. When a bar B<4> is raised, the bar m<5> raises the corresponding bar B<5>, and releases it from the toothed bar M<5>3. The effect of the curved flat needles n<2> is to guide the pattern threads up to the point m. When the carriages go to the middle and back comb, their threads engage teeth in a bar m<8>2 carried on a bar m<7>2, resting on the needles n<2>, which shog with the back comb. When the back comb is shogged, these threads are disengaged from the teeth by moving back the bar m<8>2 ; they take up their new position, and then the bar m<8>2 moves forward, to engage them, while the needles n<3> take up the crossings. The needles n<1> take up the crossing of the threads the carriages of which pass from the front to the middle comb and back. A bar m<0>2. prevents the threads of the carriages which move to the front comb from becoming slack.