US735477A

US735477A - Throat-plate for sewing-machines.

Info

Publication number: US735477A
Application number: US13803403A
Authority: US
Inventors: John Douglas
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1903-01-06
Filing date: 1903-01-06
Publication date: 1903-08-04
Anticipated expiration: 1920-08-04

Description

No. 735,477. PATENTED AUG. 4, 1903.

' J. DOUGLAS.

THROAT PLATE FOR SEWING MACHINES.

APPLICATION IILI-ID JAN. 6, 1903.

NO MODEL.

PATENT Patented August 4, 1903.

FFIcE.

JOHN DOUGLAS, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

THROAT-PLATE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 735,477, dated August 4, 1903.

Application filed January 6. 1903.

To aZZ whom it may concern: l

Be it known that I, JOHN DOUGLAS, a citi zen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new'and useful Improvements in Throat-Plates for Sewing- Machines, of which the following is a speciand the other be placed in working position when changing from one kind of work to another.

The particular machine to which the invention is in the present instance applied is a machine for stitching dash-frames for carriages. In doing some parts of the work a flush or level throat-plate is desired; but in stitching the leather or other coverings over the round or half-round iron rods which stiffen the dash-frames a raised throat-plate is required. Two interchangeable throat-plates are preferablyhinged or pivoted to the worksupport in such locations that either may be turned over into working position when the other has been turned over out of the way, one of said throat plates being plain or smooth, so as preferably to lie flush or even with the top of the work-support, and the other of said throat-plates having a raised portion in which the needle-hole or throat is formed, and which raised portion will properly supportthe work around the needle when stitching the covering to the clash-frame rods. The work-supportis preferably provided with suitable recesses in which the interchangeable throat-plate not requiredfor use will be housed when removed from its working position. I

In the accompanying drawings, Figure 1 is a perspective view showing the upper part of the work-support of a dash-frame sewing- Serial No. 138.034. (No model.)

pivotally attached the plain throat-plate 13 and the special throat-plate 14, having the raised work-sustaining lug or part 15, in which the needle-hole or throat is formed. The Work-support is provided with a groove or recess 16, which is of a proper size and depth to receive the body of either throat-plate, so that the upper surface of the body of either plate will be flush, or approximately so, with the top of the work-support when in working position, the lug or part 15 of the special throat-plate l4 projecting above the top of the work-support when the said special throatplate is in working position, as shown in Fig. 1.

The sloping sides of the work-support are provided with grooves or

recesses

17 and 18 of proper size to receive, respectively, the throat-plates 13 and 14 when either is not in working position and in which grooves or recesses the said throat-plates will be housed and out of the way when not in use.

From the foregoing it will be understood that the invention provides a plurality (two or more) of interchangeable throat-plates movably attached to the work-support of a sewing-machine in such a manner that either of them may be readily adjusted to working position or removed therefrom simply (inthe form of the invention herein shown) by turning it over on its hinge or pivot 19. Thus either throat-plate, being movably attached to the work support, will always be present for use when required, so that it cannot be accidentally misplaced or lost and can be conveniently thrown into or out of.working position and when not in use will be entirely out of the way.

The invention is not to be understood as being limited to the special-numberorforms of interchangeable throat-plates herein shown and described or to any special manner of movably attaching them to-or mounting them on the work-support, as many variations may be made in the details of the invention without departing from the spirit thereof.

Having thus described my invention, I

claim and desire to secure by Letters Patent 1 1. Asewing-machine work-support provided on opposite sides of the working position of the throat-plate with recesses, as 17, l8,'comcess in the work-support when another throatplate is to be placed in working position.

2. Asewing-machine work-support provided on opposite sides of the working position of the throat-plate with recesses, as 17, 18, combined with the interchangeable throat-plates 13 and 14, one of which is plain and the other of which is provided with a raised projection 15, said throat-plates being hinged 0r pivoted at separated points to the said Work-support so that it may be turned on its hinge or pivot to be brought into working position or to be housed in its recess when not in working position.

3. The combination with a sewing-machine work-support, of two interchangeable throatplates of different characters separately hinged or pivoted at two different separated points to said work-support and either of which may be turned on its hinge or pivot to bebrought into working position, or to be removed therefrom when the other of said throat-plates is to be brought into working position.

In testimony whereof I affiX my signature in presence of two witnesses.

JOHN DOUGLASI Witnesses:

L. B. JoNEs, HENRY J MILLER.