US1930938A - Window bracket - Google Patents

Description

Oct. 17, 1933. B, RAFTON 1,930,938

WINDOW BRACKET Filed Oct. 20, 1931 2 Sheets-Sheet 1 Oct. 17, 1933. G. B. GRAFTON 1,930,938

WINDOW BRACKET Filed Oct. 20, 1931 2 Sheets-Sheet 2 J2 J 7 1 6 Geor e B Gr Z016,

Patented Oct. 17, 1933 UNITE fgs? PA'I'EN1"OFFICE;

1,930,938 wmnow BRACKET" Geo ge B. Grafton, Irwin, r i 1 Application October 20, 1931.; s m No. 510,022

This inventionrelates to window brackets for the use of painters, window washers, and the like. An object of the invention is'the provision of a window bracket adapted to be adjustably po- 8 sitioned in holding engagement with a window frame and sill assembly, and having guard .means associated therewith which is collapsible upon the main body of the bracket to facilitate I transportation. Another object of the invention is the provision in a bracket of this character of novel means for adjusting and holding the bracket in'adjusted position. Other objects include the provision of a windowbracket which is rugged, durable, and which fulfills all knownsafety requirements dealing with devices of this general nature. i

In the drawings: i 1

Figure 1 is a perspective of a window bracket as constructed in accordance with this invention.

collapsed position. v

Figure 3 is atop plan view of the bracket as mounted in service. I

Figure 4 is a section on the line 4- -4 of Figure 3.

Figure 6 is a section through the retaining bar assembly. 1

Broadly the invention consists of a platform slidably adjustable over supporting bars or arms arranged thereunder and which have associated therewith. means for anchoring the arms with respect to a window frame so that the platform extends outwardly thereof over the window ledge. The platform carries a guard rail assem- 85 bly which is collapsible thereon for transportation and the platform is further'provided with suitable window ledge engaging rests having means thereonfor securing the platform inad- V justed position with respect to its supporting bars.

In'detail the structure comprises a platform having a deck made up of flooring strips 10-Occupying its central portion between side edge flooring strips 11 which are of greater width than the strips 10, all of the strips 10 and 11 being appropriately secured to cross sills 12, 13 and 14'extending therebeneath adjacent the rear edge, the central portion, and the front-edge respectively or the platform. I l

Each of the side edge deck strips 11 at its junction with the central cross sill 13'has associated therewith a depending substantially U- shaped metal guide 15, the upstanding, side arms of which are bent to form perpendicular shoulders 16'adapted to seatagainst ametal bearing Figure 2 is a side elevation thereof as in guard Figure 5 is a section on the line -5--5 of Figure 3.

plate: 17 resting against the under face of the sill 1'3 .to avoid injury to the sill by reason of wear. The perpendicular shoulders 16 extend laterally on opposite sides of. the guide and terminate in upstandingparallel arms17, the outer of which bears against "the outer side of the associated strip 11 and cross sill 13 and the inner of which extends upwardly through an aperture '18 provided for the purpose in thecross silland through aseating notch 19in the adjacent side 5 z platel'l, sill 13, deck piece 11, and plate 20 serve to sec'ure the parts in assembled :service position.

Adjacent the rear edge of the platform the cross sill 12 has at each side edge of the platform a guide 26 associated therewith and of a con struction similar tothe previously detailed guide 15. The guide 26 is provided with an upstanding side terminal portion 27cooperating with anear 28 on a securing plate 29 to receive the pivot stud 30 by which a rear upright guide frame bar 31' is pivotally connected to the rear edge of the platform. The plate '29 and the guide "26' are secured together by fastening elements, one of i cooperating with the upstanding terminal portion 35 of a guide arm 36 to receive the pivot stud 37 by which the lower forward end of a guide frame arm 38 is pivotally connected to the platform. Beneath the sill 1 1 the arm 35 is, bent inwardly to provide a perpendicular shoulder 39 having a bearing engagement against'a plate 40 on the'under side of the sill; Atits inner end the shoulder 39 is continued as a part I of the guide arm 36 which is formed with an outwardly flared lower end portion 41 having an inwardly directed foot 42 which is rounded'on its under face for seating engagement on a window ledge. Cooperating with the member 36 plate and which is anchored thereto by a securing element 47 passed through the shoulder, plate, sill, side strip, and upper retaining plate 33. A similar securing element 47 connects the plate 33 with the shoulder 39 of the guide member 36.

A pivotbolt 48 extends through and'between the parallel portions 36 and 43 of the forward guides and provides a fulcrum for a clamping lever 49 pivotally mounted thereon between the arms 36 and 43. The lever 49' has a cam head 50 and therespective guide arms may be clamped tightly against the sides of the cam head 50 by proper adjustment of a nut 51 threaded over the bolt stem 48. 1 I

The platform is slidably mounted over spaced supporting arms 52 of channel metal having their respective channel flanges inwardly and oppositely-directed. These channel arms 52 are slidably received through the guides 26, 15 and 36 43, and are provided at their forward ends with eyes 53 adapted to receive therethrough a rener bar 55 slidably disposed within the tube and adapted to bear at its ends 56 against the inside ofa window frame 57 when in service position, as shown in Figure 3. The tube 54- and retaining bar 55 are respectively anchored by means of a set screw 58 threaded through a floating ring 59 disposed over the tube 54, which set screwis adapted to extend through an aperture 60 provided for the purpose in the tube 54 and bear against the surface of the bar 55.

As best shown in Figure 6, the respective diameters of bar 55, tube 5 and ring'59 are such that there is a limited play between the'parts radially thereof. This materially assists the holdingaction of the set screw 58 when the parts are clamped together. s

The platform carries a collapsible guard rail r or cage assembly consisting, in an extended position, of upright rear bars 31 connected at their ends by anintegral cross piece 61 to which is attached anunder brace 62 hearing against the side bar'f33 disposed a similar side bar 65 having forwardly extended side arms 66 pivbar 24 and further protection at the sides 'of the cage is provided bymeans of pivoted links 68 connected between the upperfends] of the uprights 31 and the upper ends of the side bars 23.

At the upper end ofeac hof the side bars 23 there is pivotally connected the end of a brace 'bar 69 adapted to extend forwardly and downwardly With 'respect to the platform'and which has its lowerend pivotally' attached to the upper end of the associated bar 38 by means of a pivot stud 70. A slip sleeve 71 is adapted to slide over tliebrace arm 69 and to seat on the head ofthe studf/O to cover the'.break-- joint and maintain the brace bar iii-service position, as shown in Figure 1.

Prior to use the bracket is collapsed into the position of parts as shown in Figure 2 so that With the device guide elements areseated on the window ledge 72, the platform being slidable over the supporting channel bars 52to effect the necessary adjustment of the parts to accommodate for different sized Windows. With the parts thus adjusted the clamping levers 49 are manipulated to engage their cam heads 50'against the under channels of the bar 52 forcing the same into clamped engagement against the under side of the platform and thereby securely holding the platform in adjusted position with respect to the supporting channel barsj52. The nuts 51 may then be tightened to clamp the guide sections 36 and 43 against opposite sides of the cams and channel bars providing an additional measure of security and effectively holding the associated parts against any relative slipping movement thereb'etween. The cage is then extended to upright position by lifting up on the top cross bar 61 and the slip sleeves'll are engaged over the break-joints to hold: the V in,a window frame to extend outwardly therefrom, leg members rigidly secured to said platform and adapted to bear against a window ledge, and means for clamping said leg members bars.

2. A window bracket comprising a platform, a

guard cage carriedthereby, guide members consisting of metal strip pieces rigidly; attached into holding engagement with said supporting,

to said platform and having portions shaped to 7 provide supporting leg members at opposite sides of the platform, said cage having bracing bars connected directly to said guide members, supporting bars longitudinally slidable through said guide members, means for anchoring said bars in a window frame to extend outwardlytherefrom, saidleg members being adapted to bear against a window ledge, and clamping means same, said clamping means being-mounted upon and operable between the leg members.

, 3. In a window bracket, a platform, window ledge engageable leg members carried thereby adjacent one edge and consistingof pairs of substantially parallel metal'strips spaced apart, platform supporting bars slidably engageable between the spaced elements of said leg members, means for anchoring said supporting bars in a window frame, and clamping elements pivotally mounted between the elements of said legvmembers for'engaging against the underfac'es of said supporting'bars to bind the same againstthe bottom of said platform.

1.13 *forflengaging saidsupporting bars beneath the cage carried thereby, supporting bars beneath said platform and extending forwardly thereof, said bars having eyes formed therein at their forward ends, a bar adapted to be disposed transversely through the eyes of the supporting,

bars for engaging the inside of a, window frame, a sleeve disposed through said eyes and receivin'said first named sleeve.

having an aperture therein, and a clamping sleeve slidable over said first named sleeve and ing said bar in 'eoncentric re1ation,;said sleeve having a clamping boltfthreaded there through for engaging said bar through the aperture GEORGE B. GRAF ON. I

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