US1191662A - Spring suspension device for window-sashes. - Google Patents

Description

H. E. CAMPBELL.

SPRING SUSPENSION DEVICE FOR WINDOW SASHES. APPLICATION FILED 'MAY I. l9l6. I 1,1 91,662. Patented July 18, 191

2 SHEETSSHEET 1.

H. E. CAMPBELL. SPRING SUSPENSION DEVICE FOR WINDOW-SASHES.

APPLICATION FILED HAY I, 1916.

Patented July 18, 1916.

2 SHEETS-SHEET 2- V is HARRY E. CAMPBELL, OF NEW YORK, N. Y.

SPRING SUSPENSION DEVICE FOR WINDOW-SASHES.

Specification of Letters Patent. Patented July 18, 1916.

Application filed May 1, 1916. Serial in. 94,566.

support 19, which supports receive the ends of shafts 20, of polygonal cross section. Said shaft ends are secured in said supports To all whom it may concern:

Be it known that I, HARRY E. CAMPBELL, a citizen of the United States, residing at '15 y for each sash New York, in the county of. New York and State of New York, have invented a certain new and useful Improvement in Spring Suspension Devices for Window-Sashes, of which the following is a specification.

The invention is a spring suspension de- 10 vice for window sashes which will counterbalance a sash of any weight within practical limits.

Hitherto it has been the practice to construct a spring of definite and fixed resili of given weight. In m device the suspension springs are all alike, and the user by the means set forth initially and once for all adjusts each spring to counterbalance the weight of the-sash go which it is to carry.

My suspension device is preferably arranged in a box lintel, and with said lintel may be supplied to the nzarket asa unitary structure. In practice, a builder, for example, may order as many frames as he needs,

including the suspension devices, without regard to the difierences'in the weights of the sashes, knowing that he can adjust said suspension devices to counterbalance whatso ever differences may exist in sa d wei hts. In the accompanying drawingsigure 1 is a vertical section through the lintel, one

of the jambs, the sashes and thesilloi the frame on the line 1, 1 .of Fig. 3:. Fig.2

:5 is a vertical section of the lintel andupper portion 'of one of the jambs, and of the upper sash, on the line 2, 2 ofFig. 3. Fig.

3 is a horizontal section on' the line ,3, 3

. of Fig. 2. Fig. 4 is a horizontal'section of the lintel on t e line 4, 4 of Fig.- 2

is a vertical section on the line 5 ,5 of Fig.

4, the ratchet disk being 1 removed. Fig.

6 is a vertical section onthe line' 6, -6 of S' ilar letters and numbers of reference indicate like parts.

The frame includes a box-'shape'i'lintel 9, hollow jambs 10 and 11, the linteliand sill being connected. by bolts 12;. Within the frame are the upper and" lower sliding sashes 13, 14. Eac sash is suspended by two cords, tapes or ,chains' 15, secured to flanged drums 16, 17. I On the outer side of each drum is a journal having its'bearing in It a concave block 18 within the lintel 9. On

the inner side of each drum is a V-shaped Fig. 15

"to a collar J fixed" on helical spring K is similarly combined with H by covers 21 and stirrups '22- which pass under said supports. The arms of said stirrups extend through openings in said covers and receive nuts on their threaded ends. This arrangement of polygonal suspension shaft secured tosupports ournaled 1n the lintel is substantially the same as set fOl'lll in U. S. Patent No. 1,171,168, granted to me February 8th, 1916.

Secured to the top wall of the lintel in any suitable-way, or, if desired, formed integral therewith, is a cross bar 23, Fig.6, having three downwardly depending legs 24, 25, 26. Between the legs 24, 25 is disposed a ring A, Fig. 5, and between the legs 25, 26 is a similar ring B. .Secured on the ring A and on opposite'sides of thelegs 24, 25 are ratchet disks C, D. Secured on the ring 13 and on opposite sides .ofthe legs 25, 26 are similar ratchet disks E, F. The i rings A, B are retained between the legs 24, 25, 26 by a bar 27secured to the lower end of leg 25 and extending below said rings. On one side of bar 23 is pivoted a ,pawl G which engages. with the' ratchet teeth on disk E, and on the other side of bar 2 3 is pivoted a pawl H, dotted lines Fig.

. 5', which engages with the ratchet teeth on disk D. v flhe polygonal shafts 20, 20* pass through the circular openings in rings A, B, as shown the isks, so' that said-d1sks-and'rings are not one 'end extending through an vopening in disk C and secured in ring incloses theshaft 20' and has its opposite "end secured said shaft. A like ring B andcollar L on shaft 20* At' the time 'the'upper sash 13 is raised into closed position,-. the spring'K is .in its expanded state, as-shown inFi 2 and'4, the suspension cords being wound upon their drums. When thezupper sash 13 is moved downwardly said cords rotate the drums and hence the shaft 20", and because the spring K is attached at one end to the collar L on said shaft and-at the other end'to the ring B, which is prevented from rotating by the engagementof pawl G with ratchet disk E, said spring is wound up and acts as a ot e ax I by said-shafts. A helical spring I hav'ingi g in E ig; 5, and'tu'rn'freely in said 0 enings, and also the openings I provide the ratchet disks F counterpoise for the weight of the sash. When the sash 13 is raised to close it, the spring K expanding rotates shaft 20*, thus causing the drums to wind up the cords. At the time the lower sash 14 is lowered to closed position, the spring I is in wound up state, as shown in Fig. 4, and counterpoises the weight of the sash, the suspension cords then being unwound from their drums 'hen said sash is raised to open it, the spring I expanding rotates the shaft 20 thus causing the drums to wind up the cords.

In order to adapt my spring device to sashes of different Weight, all that is required is initially to adjust the tension of the'helical spring to weight of any givensash. For this reason, which, since they have no engaging pawls, a Wrench may easily be applied. By rotating the disk D in direction to cause the teeth of its associated disk C to run-under pawl G, I Wind up and so increase the tension of spring I, and said spring in turn rotates 25 shaft'20 and drums 16,17 thereon to cause the cords to pull upwardlyon sash M until the desired-balance is attained.- In similar manner, the disk F is rotated to balance sash 13. 'This adjustment of the spring tension need be made but once-for all, when the sashes are put in place in the window-frame.

I claim:

1. A frame, a sash'vertically slidable in said frame, a spring suspension device for said sash comprising a shaft and a, helical spring surrounding the same and connected at its ends respectively to'said shaft and said frame, independently supported means inclosing and rotatable onsaid shaft for adjusting the tension of said spring, and means for retaining said last-named means in adjusted position. v

'2; A frame, a shaft journaled in theupper member thereof, a helical spring surrounding said shaft having one end secured to said frame, a support on said frame, a ring connected to the other end of said-spring,

said ring being loose on said shaft-and r0:

tatable in said support to adjust the tension of said spring, means for retaining said ring Copies of this patent may be obtained for five cents each, by addressing the suspension counterpoise the said frame, and D, to

disks and ring, one end to one 1,191 ,eea

in adjusted position, a sash vertically slidable in said frame, and suspension cords connecting said sash to said shaft.

3. A frame, a shaft journaled in the upper member thereof, a fixed support on said upper, member, a ring loose on said shaft received and rotatable in said support, a ratchet disk fast on said ring, a pawl on said support engaging said ratchet disk, a helical spring surrounding said shaft having one end secured to said frame and the other end secured to said disk, winding drums'on said shaft, a sash vertically slidable in said frame, and suspension cords connected to said drums and said sash.

i. A frame, a sash vertically slidable in a support disposed at right angles to and secured upon the upper member of said frame, a ratchet disk rotatably secured on said support, a pawl engaging said disk, the said disk and support having openings, a. shaft journaled on said upper frame member and passing through said openings, a helical spring surrounding said shaft and connected at and at its opposite on said shaft, and suspension cords connected to said sash and saiddrums.

5. A frame, comprising a lintel in closed box form, a transverse partition in said lintel having a recess on its under side, a ringin said recess, ratchet disks having central openings secured on opposite sides of said ring, means for retaining said ring in said'r'e'cess, a pawl on said partition engaging one of said ratchetdisks, a shaft journaled in said linteland passing through said A a helical spring connected at of said disks and surrounding said shaft and connected at its opposite end; to said shaft, drums on said shaft, a sash-slidable in said frame, and suspension cords connected to said sash and said drums. In testimony whereof I have affixed my signature in presence of two witnesses,

HARRY E. CAMPBELL.

l/Vitnesses:

- -GERTRUDE T. PORTER, MAY T. McGARmr.

Gommissioner of Patents,

Washington, 10. 9.

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