USRE355E - Improyement in sewingimachmes - Google Patents

Improyement in sewingimachmes Download PDF

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Publication number
USRE355E
USRE355E US RE355 E USRE355 E US RE355E
Authority
US
United States
Prior art keywords
needle
loop
thread
hook
bar
Prior art date
Application number
Other languages
English (en)
Inventor
H. Johnson
Publication date

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  • Figure l is a plan df the machine.
  • Fig. 2 is a side elevation and section'of the bed on line :v y Ot' Fig. 1.
  • Fig. 3 is a rear elevation of the machine.
  • Fig.4 is a front elevation ofthe machine.
  • Fig. 5 shows the first step in the formation of the stitch.
  • Fig. 6 shows the rst loop leit upon the hook when the needle has withdrawn.
  • Fig. 7 shows the needle after lthe second perforation.
  • Fig. 8 shows the position of the hook after shooting into the second loop.
  • Fig. 9 shows the position of the parts after the third perforation of the needle.
  • Fig. 10 shows the position of the loops after the hook has left the thread.
  • Fig. 11 shows the formation of the stitch on a large scale.
  • the first part of my invention consists in making a seam of one thread by means of a" single needle and a double spI-ing-hook,which I call the belaying double-loop stitch, in which the stitches are so looped and inter-Y locked with each other that they cannot easily be picked out,L or unrayeled by pulling upon any part of the thread.
  • the second part of my invention consists in applying theepower bywwhichethe material is fed directly to the goods themselves, and at or near the point where the stitches are being formed.
  • A represents the needle-bar, moving vertically in the guide B, byreason of the alternateelevation and depression ofthe arms of the beam C, caused by theconnection of thel arm D with the eccentric E, through the connecting rod F, the beam being connected with the slides H H by the socket-joints a', and the needle-bar A,
  • the operation of the machine is as follows;
  • the thread passes from the spool F through the eye 1f of the spring-guide Il and eye h on the needle-bar A tothe eye of the needle m, through which it is passed from the outside.
  • the spool F" l is suspended between the arms 3 J', attached to the upper extremity of the needle-bar A; anarrangement of plates, screws,
  • the material to be sewed is placed upon the table A', under the point of the needle m and cloth-holderl B', which is raised by the stud y A toadmit the thickness.
  • Power applied in any convenient manner revolves the shaft N, which, through the cog-wheels S and T, gives motion to the, eccentric E, operating the nee ⁇ t d le-bar A, so aste give it a compound vertical and vibratory motion by, means of the beam 3, slides Hl and H', and slotted lever I, ar.
  • the needlefm l passes through the cloth, carrying with it the thread r.
  • a loop is formed on it, in ⁇ to -which shoots the fo'rkedhookf n by the action of the cam M, as shown in Fig. 5,.
  • action of theneedle-bar continuing, the needle
  • the upward l m rises from the cloth, leaving the loop upon the hook n; as seen in Fig. 6.
  • the vibration of theneedle during the first perforation feeds forward the cloth, and permitsthe needle, in

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