US2542434A - Quick release for foot bars of sewing machines - Google Patents

Quick release for foot bars of sewing machines Download PDF

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Publication number
US2542434A
US2542434A US117901A US11790149A US2542434A US 2542434 A US2542434 A US 2542434A US 117901 A US117901 A US 117901A US 11790149 A US11790149 A US 11790149A US 2542434 A US2542434 A US 2542434A
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United States
Prior art keywords
quick release
tubular member
foot bar
sewing machines
foot
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Expired - Lifetime
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US117901A
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Harvey L Russell
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Individual
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Priority to US117901A priority Critical patent/US2542434A/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices

Definitions

  • This invention relates to quick release for foot bar of sewing machine, and it has among its salient objects to provide a very simple, prac-- tical and economical release for the foot bar of a sewing machine whereby to make it possible for the operator to move the piece being sewed in all directions under the foot.
  • Figure 1 is a side elevation of the invention removed, showing the parts separated and partly in section;
  • Figure 2 is a view of a sewing machine head, partly broken out to show the application of the invention thereto.
  • 3 designates a sewing machine head, with the foot bar 4 therein as usual, the upper end of said foot bar being provided with a coiled spring 5, over a reduced bar or rod 6,
  • the invention consists of a tubular member 1, preferably flared at both ends, as shown, whereby the lower end can be placed on the upper end of the coiled spring 5, as shown, and the other end is flared slightly to prevent the nut from coming on and being lost.
  • a threaded member 3 On said tubular member is a threaded member 3, having a nurled ring 9 and a threaded split upper end lil, tapered to receive a lock nut II, to be screwed thereon for the purpose of clamping the split portions I upon said tubular member I, for holding said tubular member 1 down On said spring 5, or of releasing it so as to allow the foot bar to be free.
  • a quick release for said foot bar including a tubular member to be inserted into said head on the upper end of said foot bar, a threaded member over said tubular member and screwed into said sewing machine head, and having a split threaded end around said tubular member, and a lock nut to be turned on to said split threaded end to clamp upon said tubular member for holding it in adjusted positions and for releasing it to release said foot bar.
  • a quick release locking means for locking said foot bar in adjusted positions, and including an insert tubular member to be placed over the upper end of said foot bar and its spring, a threaded clamp nut to be screwed into said sewing machine head, around said tubular member, said clamp nut having a split end bearing on said tubular member, and a lock nut to be screwed on to said split end for clamping it frictionally around said tubular member, whereby to release said lock nut is to release said tubular member and said foot bar.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Description

H. L. RUSSELL QUICK RELEASE FOR FOOT BARS OF SEWiNG MACHINES Feb. 20, 1951 Filed Sept. 26, 1949 IN V EN TOR.
Patented Feb. 20, 1951 QUICK RELEASE FOR FOOT BARS OF SEWING MACHINES Harvey L. Russell, Alhambra, Calif. Application September 26, 1949, Serial No. 117,901
2 Claims.
This invention relates to quick release for foot bar of sewing machine, and it has among its salient objects to provide a very simple, prac-- tical and economical release for the foot bar of a sewing machine whereby to make it possible for the operator to move the piece being sewed in all directions under the foot.
I have illustrated the invention on the accompanying sheet of drawings, which I will now describe;
Figure 1 is a side elevation of the invention removed, showing the parts separated and partly in section; and
Figure 2 is a view of a sewing machine head, partly broken out to show the application of the invention thereto.
In the drawing, 3 designates a sewing machine head, with the foot bar 4 therein as usual, the upper end of said foot bar being provided with a coiled spring 5, over a reduced bar or rod 6,
,as clearly shown. This mechanism is substantially the same in most sewing machines.
The invention consists of a tubular member 1, preferably flared at both ends, as shown, whereby the lower end can be placed on the upper end of the coiled spring 5, as shown, and the other end is flared slightly to prevent the nut from coming on and being lost.
On said tubular member is a threaded member 3, having a nurled ring 9 and a threaded split upper end lil, tapered to receive a lock nut II, to be screwed thereon for the purpose of clamping the split portions I upon said tubular member I, for holding said tubular member 1 down On said spring 5, or of releasing it so as to allow the foot bar to be free. In order to accomplish this, it is only necessary for the operator to loosen the lock nut I I, whereupon said tubular member 1 is free to move upwardly under the tension of the spring, and thus leave the foot bar free to move as the material being sewed is moved back and forth and around and around as in quilting or doing other irregular sewing.
It will be noted that the invention is such that it can be substituted for the usual holding means for said foot bar by simply unscrewing it and substituting the invention as here described in its place.
I do not, of course, limit the invention to the details of construction shown for illustrative purposes, except as I may be limited by the hereto appended claims.
I claim:
1. In combination with a sewing machine head and the foot bar operating therethrough, of a quick release for said foot bar including a tubular member to be inserted into said head on the upper end of said foot bar, a threaded member over said tubular member and screwed into said sewing machine head, and having a split threaded end around said tubular member, and a lock nut to be turned on to said split threaded end to clamp upon said tubular member for holding it in adjusted positions and for releasing it to release said foot bar.
2. The combination with a sewing machine head, its foot bar and tension spring therefor, of a quick release locking means for locking said foot bar in adjusted positions, and including an insert tubular member to be placed over the upper end of said foot bar and its spring, a threaded clamp nut to be screwed into said sewing machine head, around said tubular member, said clamp nut having a split end bearing on said tubular member, and a lock nut to be screwed on to said split end for clamping it frictionally around said tubular member, whereby to release said lock nut is to release said tubular member and said foot bar.
HARVEY L. RUSSELL.
No references cited.
US117901A 1949-09-26 1949-09-26 Quick release for foot bars of sewing machines Expired - Lifetime US2542434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US117901A US2542434A (en) 1949-09-26 1949-09-26 Quick release for foot bars of sewing machines

Applications Claiming Priority (1)

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US117901A US2542434A (en) 1949-09-26 1949-09-26 Quick release for foot bars of sewing machines

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US2542434A true US2542434A (en) 1951-02-20

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US117901A Expired - Lifetime US2542434A (en) 1949-09-26 1949-09-26 Quick release for foot bars of sewing machines

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870726A (en) * 1955-09-09 1959-01-27 Singer Mfg Co Presser mechanisms for sewing machines
US2900148A (en) * 1958-05-29 1959-08-18 William H Nickels Locking device
US4373405A (en) * 1980-09-03 1983-02-15 Gould Inc. Molded plastic control lock knob with push and/or pull feature
US5083477A (en) * 1991-01-31 1992-01-28 Gould Inc. Control knob locking assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870726A (en) * 1955-09-09 1959-01-27 Singer Mfg Co Presser mechanisms for sewing machines
US2900148A (en) * 1958-05-29 1959-08-18 William H Nickels Locking device
US4373405A (en) * 1980-09-03 1983-02-15 Gould Inc. Molded plastic control lock knob with push and/or pull feature
US5083477A (en) * 1991-01-31 1992-01-28 Gould Inc. Control knob locking assembly

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