US1232722A - Needle-plate for sewing-machines. - Google Patents

Description

G. SCHHGIEII,

NEELE PLAI'E FR SMI/ING IIIIZHINES,

APPLICATION FILED AFR. I0; EBIT.

7 change from one of these plates yto another.

VERGE SCHRDER. 0F BERKELEY. CALIFORNIA.

l blEElIlE-PLTE EUR SEWING-MACHINES.

Y Specification of Letters Patent.

Patented July 1Mb, 191'?,

Application; filed April 10, 1917. Serial No. 160,987.

To all may concern;

.Bc it lino-wn that l, Groen Senncunn, a citizen of the United States, residing at i'erkeley, in the county of .Alameda and State ci California, have invented new and useful. improvements in NeedlesPlates for Sewiiig-llachines, of which the cllowing is a specication,

The present invention relates to improve-v ments' in needle plates on machines for stitching soles of shoes having a straight needle and awl,

On 4needle. for stitching leather soles to uppers, it is necessary to form a cutter for cutting a groove in the leather sole. Re

cently rubber soles have corne greatly into use.I and in such soles a groove should never be cut as in leather soles. Consequently, 1t

has been the practice to provide two needle plates, one with a 'cutter for cutting the grooves in. leather soles, and the other without the cutter,"for rubber soles.

It takes a good deal of time and unpleasant labor to remove the screws in a confined space on a hot needle plate cap in order to lt is the object of the present invention to provide a needle plate which can be used for stitching either a rubber or a leather sole and in which the labor and time required for adjustment is very small.

In the accompanying drawing, Figure 1 is a front view or' a cap havingthereon a needle plate constructedin accordance With my invention; Fig. 2 is a plan View of' the needle platerenioved; F igs. 3 and 4: are sectional views on the lines 3-3 and 4-4 respectively of Fig. 2. f

Referring to the drawing, l indicates a needle plate cap of the present construction and 2 indicatesmy improved needle plate. Said needle plate is formed with a centrally locatedcountersunk hole 3 by whichit may be secured by a screw 4 to the needle plate cap, and on which as a pivot the needle plate .can be turned. Said needle plate is formed 2with two extensions 5 and 6 from said hole 3 in directions at right angles to one another. In the extension 5 is formed a tangentially directed slot 7 for the sewing` lmachine needle,'said slot being used when said needle is used or'stitching' rubber soles.

.In the other extension 6 is a .tangentially diadapted to receive the sewing machine needle when stitching" leather soles, and the cutter 9, being for the urpose of cutting grooves in said soles. T e outer edn'e 11 of the extension 6 is beveled, as shown in Fig. l, while the outer edge of the extension 5 is of uniform thickness, as shown in Fig. 3. For the purpose of quickly adjusting the needle plate from its position suitable for stitching leather soles to its position suitable for stitching rubber soles, or conversely, I have formed in the needle plate an arcuate slot 12 to receive the shank of a screw 13, the plate at each end of the slot 12 having a countersunk portion 14 sumciently large to receive the head of the screw. Said screw 13 is, in either position of the needle plate, screwed into a hole in the needle plate cap. The method of moving the needle plate from one position to another is very easy and,

rapid. To do this, first, the screw 13 is unscrewed suliciently to bring its head out'of the countersunk portion 14 provided-therefor. Then, the screw 4 being sufliciently loose, or loosened, to permit the plate to be turned, said plate is turned through a right angle, the central portion of the arcuate slot moving past the shank of the screw 13 and the plate 2 at the margins of said slot moviner under the head of the screw 13, until the said head is immediately over the countersunk portion of the plate at the other end of said slot. rlhe screw 13 vis then screwed down so that it's head is received in said countersunk portion. If desired, the screw t canalso be screwed down tight to the needle plate.

I claim:

1. A needle plate provided with a hole through which can be passed a pivoted screw to be screwed into a needle plate cap and upon which said plate can be turned, said plate having, in portions extending from .said pivoted screw at right angles to each other, slots extending` at right angles to each other, and also having, in line with one of said slots and at one end thereof, a cutter for cutting leather, saidv platehaving also, in a part4 on the other side of said hole from said slots, a slot extending in a circular arc of about the pivot hole as center, and means for clamping said plate to the needle plate cap at either end of said arcuate slot. 2. A needle plate provided with meansfor pivoting it to a'needle plate cap, and having two slots each extending in :erta-ngential direction with reference to said pivotal gig ineens, havingr also :L cutter et one end of said slots and in line tlieiewitli, li ving also :L slot extending,F in an are of n Circle about the pivotal ineens :is center and subtendil'ig :it seid pivotal ineens :in angle equal to the angular distance between the centers; of Said two slots, and Ineens adapted to extend*I through either end of said last-named sloi'J for clamping Suid needle plate to the needle plate Cep.

otal means, having also e Gutter et one end of said slots and in line tllegewtli, having also a slot extending; in an are of fi. circle about the pivotal means'ae Qenier and subH tending at, said pivotal ineens en angle equal to theangular distance between 1the centes of said two Slots, each endof said lest-named slot being vcountersunk to receive the head of a Screw which een be screwed into the hole in the needle plate cap, said slot being suiieiently Wide to recei .Je the shank screw 2 but not the head.

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