US533665A - And boston - Google Patents

Description

(No Model.)

G. R. PEARE. SHOE SEWING MACHINE.

No. 533,665. Patented Feb. 5, 1895.

ITE- 1.1-

www, y). (.w

lhvrrnn STATEs ATENT ritten` GEORGE R. PEARE, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE STEAM HEATED HORN COMPANY, OF PORTLAND, MAINE, AND BOSTON,\MASSA CHUSETTS.

SHOE-SEWlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 533,665, dated February 5, 1895. Apprenti ne@ rerum 5,1894. sem mineure. fr@ man.)

To a/Z whom t may concern:

Be it known that I, GEORGE R. PEARE, of Lynn, in the county ot' Essex and State of Massachusetts, have invented certain new and useful Improvements in Steam-Joints for Shoe-Sewing Machines, of which the following is a specification.

rlhis invention relates to an improved construction of steam-joint foruse between the rotary horn of a shoe-sewing machine of the McKay type and its support, whereby steam may be conducted to the horn and wax-pot after the manner disclosed in Patent No. LlO5,592, granted to me .Tune 19, 1889.

One object of the present invention is to provide a construction whereby the weight of the horn may be utilized to maintain the joint steam-tight.

Another object is to effectually prevent aocess of the drip of condensation to the gear on the whirl-driving spindle.

A further object is to provide for lubricating the bearings by means of the condensation.

To the above ends, the invention consists in the novel construction and arrangement of parts hereinafter described and claimed.

The invention is illustrated in the accompanying drawings.

Figure l shows a vertical section of the joint and parts of ashoesewing machine with which itis connected. Fig. 2 shows a crosssection of the female member of the joint. Fig. 3 shows a bottom plan view of the male member'. Fig. 4 shows a side elevation of the male member. Fig. 5 shows a plan ot' the female member.

The letter ct designates the supporting arch ot the frame of the machine; b, the hollow sha-nk of the horn; and c, the spindle which transmits motion to the whirl, said spindle extending vertically through the arch and carrying a bevel-pinion, c', below the same, to receive motion from the driving means.

The parts above enumerated are common to shoesewing machines of the McKay type, to which my invention is applicable.

A sleeve, CZ, is fitted tightly in the arch, a, and extends vertically therethrough and projects above the same. Said sleeve surrounds the spindle, c, and has a bushing, c2, at the lower end, forming a bearing for said spindle. An extension, d', of the sleeve, thinner than the sleeve itself, extends upward therefrom and forms a shield to prevent condensation which collects in the hollow shank from passing down along the spindle to the gear on the lower end of the same, and being thrown about by said gear.

The letter e designates the fem ale member or socket of the steam-joint, which seats on the arch, a, and is held from turning by pins, e. Said member, e, has a central opening to accommodate the sleeve, d, and is recessed in the under side around said opening, as at e2, to receive packing, e5, and a ring, e4, forming a steam-tight joint around the sleeve. The memberc has a central boss which is recessed in the upper side at the middle, so as to form a series of annular seats, e5, e6, e7, around the sleeve rising one above the other, as steps, and is further recessed outside the central boss, to form a cup, es, in which condensation may accu mulate and from which it may escape through a pipe, e9. Ports, f and f', extend ont of the vertical walls, f2, and f3, which rise from the annular seats, e5 and e, respectively, and a steam-supply pipe, g, enters the member, e, and communicates with the port, f, and an exhaust-pipe, g' enters the opposite side ot' the member, e, and communicates with the port,f. lA shell, h, is mounted on the member, e, and forms an upward extension ot the cup,'e8.

The male member, c', ol the steam-joint is formed with a series of annular stepped shoulders, fi", i2, 113, which rest on the seats, e5, e, ci, respectively, of the female member. In the portions of the male member extending between the shoulders, t" and i2, and t2 and i3, annular passages, it, and t5, are made and communicate respectively with the ports, f and f Passages, if and il, extending through the member, c', connect the passa-gest"1 and t5, respectively with pipes j and j', fastened in arms of the member, i, and one,j, adapted to conduct steam to the horn and the other, j', adapted to return the steam and condensation.

The horn-shank, h, seats in a recess in the upper side of the membergzl, and is prevented from turning therein by a pin, 7c. The horn is fitted with a bushing, 7a', which closely sur- IOO the following provisions: the passage, iisv extended in halt" its crosssectional area (see :o Fig. 3) downto the seat, e5, and lsaid passage emerges from the shoulder, t2, in its full crosssectional area, and thus extends partly over the seat, e6. vThe passage, il, is extended in half its cross-sectional area down to the seat,

v e6, and extends over that part ofthe latter not covered by the passage, i, vSaid passage, 7,

vemerges in its full cross-sectional area from the shoulder, t3, and thus extends partially over the seat, e?. The remainder of said seat cev is covered by a notch, m, in the shoulder, t3.

'Ihat part of the lowest seamei, not covered by the passage, di, is provided for 'by a groove,

m', extending along the bore of the member,

fi, and through the bushing, le', and allowing lubricant to pass down from the interior of the horn to the lower seat It will now be seen that provision is made forlubricating the bearings throughout all their lateral extent.

Condensation, which might work itself between the joint-members and the sleeve, d,

v would be prevented from passing down along the sleeve by the packing, e3, vand would bev obliged to rise along the sleeve and enter the vv hollow horn, from whichv it would "be disa charged through a passage, n, into the cup, es.v In the operation ofthe'machine, steam en tering through the pipe, g, passes into the annular passage, t4, and traverses the same un- 4o til it iinds the passage, t6, through which itis conducted to the pipe,j, and therethrough to the horn. The steam and condensation return from the horn through the pipe, j', the

passage, t7, the annular passage, t5, the port, f', and ripe g- It is to be understood that the invention is not limited to the structure here shown, but is capable of embodiment in other forms.

Having thus described my invention, what 5o I claim as new, and desire to secure by Letters Patent, is

l. In a shoe-sewing machine, the combination with a rotary horn, of a stepped bearing therefor of steam joint comprising a female member having a series of annular stepped seats and steam inlet and outlet ports in the walls extending from the seats respectively, and a male member having stepped annular shoulders fitting the seats of the female member, annular passages in the walls extending ssaeee from said shoulders, said passages communieating withv the inlet and outlet ports respectively, and steam supply and exhaust passages communicating with said annular passages re t spectively. v v

2. In a shoe-sewing machine, the combinav tion with a rotary horn, of a stepped bearing therefor of steam joint comprising a female member having a series of annular stepped seats and steam inlet and outlet ports in the walls'extending from the seats respectively, and a male member having stepped annular shoulderstttingthe seats of the female mernber, annular passages in the walls extending from said shoulders, said passages communicating with the inlet and outlet ports respectively, and steam supply and exhaust passages communicating with said annular passages respectivelyreoo'mmunicationsbeing provided between said passages and the annular seats and shoulders for purposes oflubrication, substantiallyas described. 'v v 3. The combination, with therotary hollow horn-shank and the whirl-driving spindle extending'therethrough, of a fixed' sleeve surrounding said spindle and extending up into the horn-shank, and a steam-joint comprising two members surrounding saidsleeve, one being stationary andthe other arranged to rotate'with the horn-shank.

4. The combination of a tixed support, a sleeve aixed therein and projecting upward therefrom,'a whirl-driving spindle extending through said sleeve, a socket or female mem-v her of a steam-joint `surrounding the sleeve and affixed tothe support, said socket having stepped seats and steam inlet and outlet ports above the seats, respectively, packing interposed between said socket and the sleeve, a male member of the steam-joint stepped to fit the female member and having annular passages communicating with the ports thereof, and steam supply and exhaust passages communicating with the annular passages and connecting with pipes which extend to the horn, a hollow horn-shank surrounding the upward projecting portion of the sleeve and IOO aflixed to the male member ot' the steam-joint,

and a cup supported by the female member of the joint and surrounding the lower portion of the horn-shank.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 26th day of January, A. D. 1894:.

GEO. R. PEARE.

Witnesses:

F. P. DAvIs, ARTHUR W. CRossLEY.

IIO

Images