US1516793A

US1516793A - Window scaffold

Info

Publication number: US1516793A
Application number: US681268A
Authority: US
Inventors: Samuel Frank
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-12-17
Filing date: 1923-12-17
Publication date: 1924-11-25
Anticipated expiration: 1941-11-25

Description

Nov, 25, 1.924.

gmenfo Frank ,5 e mlLeL.

Filed Dec. 17.

Patented Nov. 25, 1924.

FBANK SAMUEL, OF DETROIT, MICHIG-ANL ApplicationirfiledDecember 17;. 1,923.

To all who-nb z'twmy connor/n:

Be it known that I, FRANK SAMUEL, a former citizen of the Republicl of Poland, Who has declared-his-ntention ofbecoming a citizen of-the United States, and Who is residingatDetroit, inthe county of VVayne and State of Mich-igan, has invented a new and useful Improvementin a VVindoW Scaffold, of Which the following-is a specificatlOIlz' Myinventi-on relatesfto; a new-and useful improvement Window 'scafioldand has for its objectthe provision of a Window Safioldi Which:v Will be- Simple in Structure, econcniical'A of manufacture andV highly efficient-in'use. p

Another object of theinvention is the provision of a scafi'old adapted for attachment to a building atthe exterior of a Window and provided-With means adapted. to engage the sloping sill of the Window and retaining the scaffold in horizontal position.

Another object ofthe invention isthe provision of aWindoW scaifold having' a platform and super-structure adapted for folding into compact positionfor carrying the same. v

Another object of; the .invention is .the p rovision of a Window scafioldhav-ing means adapted for engagementI With the sash Vof the \vindovvY for retaining the scaifold in mounted position onthe Window.I Other objects Will appear-hereinafter.

The invention consists .in the combination and arrangements-of partshereinafter describedand claimed. i

The invention Willzbe best understood by a reference to the accompanying dravvings Which form a part of this specification and in Which,

Fig. lis a centralvertical sectional view of the invention, showing parts in elevation,

Fig. 2 is a front elevational view of the Livention,

Fig. 3 is a sectional view taken substantially on line 3-3 of Fig. 1.

The invention is adapted for use in Washing WindoWs and the like and is designed to be mounted on the Window sill so that the one Washing the Windows may have a suitable support at the exteror of the Window, permitting free use of both the hands and arms.

In the-preferred form of structure, the invention comprises a supporting member,

Seriafl' No. 6813268.

or platform 8, projectingfupWardly-from i:

Which, at tWo corners, are rails 9-to4 the upper ends of Whichare hingedly Connected, as at 10, extensions 11 of these rails,V The rail 9 is hingedly Connected to a cross' bar 12 mounted on the upper surface of the platform 8- at its extremities. The rails 11 are connected by cross member 13. The structure is such that the-rails 11 may be folded upon the rails 9 so that thermember 13' Will lieV inv engagement With a cross member V14, mounted on the,V upper surface of the `platform 8, Which serves as an abutment for fthe rails. 9 When raised to upright. position, as shown in Fig. 1. The rails 9 may likewise be folded upon the platform. Mounted at the other two corners of the platform are uprightrails 15, Which are hingedly connected'to the member 12v so as to fold in- Wardly upon the platform` 8. These menu` bersV When raised to upright position-are preventedfrom folding' invvardly by means of a pivoted arm 1G Which is mounted thereon and provided WithI a notch 17 adjacent its free end for engaging a Stud 18, mounted on the edge of the platform 8. Hingedly Connected to the members 15, intermediate their ends are cross armsV 19, each of Which is providedl With a downvvardly projecting tongue 20 Which engages-ina U-sha-pied eyelet'2l, mounted on the' member 9. Inthis Way, the` member 9 is prevented from folding While in use. Hingedly mounted upon the member 15, adjacent its upper endV is a cross arm 22, \vhichis provided, at its free end, With-a doWnWardly. projecting tongue 23, adapted to engage in a U- shapedveyelet 24 mounted upon the member 11,A AIn this Way section 11 is prevented from folding When-inuse. It is-also to be noted thatfthe cross arms 22 engage the members'11;intermediate their length so that the rail 13 projects above the cross arms 22. Mounted upon the under surface of the platform 8 i is a strip of metal 25 Which is angularly turned at 26 to engage the forward end of the platform 8. A portion 27 extends from this angularly turned portion and carries an angularly turned portion 28 terminating in a portion 29 Which is fastened to one end 30 by suitable bolts of an L-shaped member projected through the other leg 31 of Which is a suitable screw 32 having a head 33 provided With Wings. Mounted upon the under surface of the platform 8, over the strip 25 is a stripA 34, made from some resilient metal,

said strip having an angularly turned portion 35, projecting forwardly from which is a portion 36 having a doubled over portion 37 Which. terminates in an elongated portion 38.

In mounting the device for use the portion is placed in engagement With the sloping sill 39 of the window casing 7. The portion 27 lies in engagement With the upper surface of the Window sill and the set screw 32 is threaded into engagement with the under surface of the window sill. VVhen in this position the window sash 40 may be lowered into engagement With the portions 28 and 27, as shown in Fig. 1. In this way the device is locked upon the window casing by the window, itself, as Well as by the set screw. The formation of the metal supports which are attached to the' under surface of the platform 8 and which engage the Window sillpresents to the platform a certain spring effect owing to the doubled over portion 37 of the strip. In this Way, a moving about of the operator on the platform will not transmit violent ars to the window sash 40 or the set screw 32, the jars being absorbed by the spring support. As shown in Fig. 2, the L-shaped member may be adjusted on the portion 29 by providing a plurality of openings in the portion 29, through which the bolts may be projected. In this I way, the device may be adjusted for use on i window sills of varying widths.

VVhile I have illustrated and described the preferred form of structure, I do not Wish to limit myself to the precise form of structure shown but desire to avail myself of such variations and modificati-ons as come within the scope of the appended claims.

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

projecting upwardly therefrom and adapted to fold thereon; and hingedly connected arms mounted on said additional rails for engaging said first mentioned rails and eX- tensions for retaining the same in rigid condition.

2. A Window scaffold comprising a platform; rails Connected to and projecting upwardly therefrom and adapted for folding thereon; additional rails mounted on said platform and projecting upwardly therefrom and adapted for folding thereon; U- shaped clips mounted on said first mentioned rails, arms hingedly Connected on said second mentioned rails; tongues mounted on said arms for engaging in said U- shaped clips for retaining said rails in operative position.

3. A window scaffold comprising a p1atform; a resilient supporting member mounted on said platform 'having an angularly turned portion adapted to engage the inclined surface of a window sill With which used; a supporting arm for said platform projecting therefrom and provided with an angularly turned portion adapted for engaging the sash of a window with which used; and adjustable means for securing said supporting arm to said window sill.

4. A window scaffold comprising a platform; rails hingedly connected to and projecting upwardly therefrom and adapted for folding thereon; extensions on said rails hingedly Connected thereto and projecting upwardly therefrom and adapted for folding thereon; additional rails hingedly connected to and projecting upwardly from said platform and adapted for folding thereon transversely of the direction for folding of said first mentioned rails; and arms on said additional rails for retaining said fir-st mentioned rails and eXtensions thereof in operative position; and means pivotally mounted on said additional rails for engaging said platform for preventing the folding of said additional railsA on said platform.

In testimony whereof I have signed the foregoing specification.

FRANK SAMUFJL.,