US498464A - dormitzer - Google Patents

Description

2 R E Z T I M R O D A CHAIR FOR WASHING WINDOWS.

No. 498,464. Patented May 30, 1893.

lNVENTO/Y Kw ATTORNEYS.

2 Sheets-Sheet 2.

(No Model.)

A. DORMITZBR. CHAIR FOR WASHING WINDOWS.

Patented'May so, 1893.

/ ATTORNEYS.

mus rzrzns no. mommnq. WAsl-mmm STATES UITE i1= ANNA DORMITZER, OF NEW YORK, N. Y.

CHAIR FOR WASHING WINDOWS.

SPECIFICATION forming part of Letters Patent No. 498,464, dated May 30, 1893.

Application filed January 12.1893J Serial No. 458,108. (No model.)

To all whom it may concern.-

Be it known that I, ANNA DORMITZER, a resident of New York, in the county and State of New York, have invented an Improved Chair for Washing Windows, of which the following is a specification, reference being had to the accompanying drawings, forming part hereof, wherein- Figure 1 is a-vertical section of my improved chair for washing windows, the line 11, Fig. 2, indicating the plane of section. Fig. 2 is an inner face view of said chair. Fig. 3 is a detail section,.on an enlarged scale, of the outer brace of said chair and its connections. Fig. 4 is a face view of the chair when folded together; Fig. 5 a side view of the same when folded together; Fig. 6 a detail vertical section on the line 6'6 Fig. 7; Fig. 7 a detail bottom View of the front locking latch; Fig. 8 a detail vertical section of the lower part of the inclined ladder-support and brace. Fig. 9 is a detail view of a portion of the bottom of the chair. 1 p

This invention relates to certain improvements in chairs and ladders that can be used on windows of houses when the same are to be washed or repaired, &c.

The invention consists in certain details of improvement that are hereinafter more fully described.

The main features of my chair are a plat form properA (see Fig. l), afront downwardly extending brace-piece B, a rear downwardly extending brace-piece C, an upwardly extending brace-frame D, and an upwardly extending ladderframe E. When I said downwardly and upwardly projecting as to the parts B, O, D, E, I mean with reference to the platform A in the position of use, which is represented in Fig. 1. In this same figure the letter F represents the window-sill, and G the wooden molding on top of said window-sill. Assuming that the platformA is a rectangular platform having the proper length to extend across the top of the sill F and molding G, I will first state that the front downwardly extending brace B is hinged to the under part of the platform A so that it can be folded substantially flat against said platform, as in Fig. 5, or extended at right angles as in Fig.

1. The hinge connection between the downwardly extending front brace B and the platform Ais indicated at a. in Fig. 6. From the same figure and also from Fig. lit will appear that when the brace B is folded down in the vertical position to the platform A, an upper cross-bar b, which forms part of this brace-frame B, folds against the inner face of a downwardly extending ledge d on the frame A. By this means the downwardly extending brace B is prevented from folding outward farther than the ledge d will permit. It also appears from Fig.6 that the movable downwardly extending brace B carries at the lower side of its upper bar h an outwardly extending spring e which has'an aperture adapted to receive a pinfthat projects downward from the ledge d. It follows that whenever the downwardly extending brace B is swung on its hinge into the vertical position, its spring 6 snaps into or over the pin f and thereby locks the parts A B in the position shown in Figs. 1 and 6. As a matter of further security for holding the brace B in proper position, it is connected with a set of slotted and pivoted guidebraces g, of which one is shown by full lines in Fig. 5 and one shown in the operative position by dotted lines in Fig. 1. This downwardly projecting frame B carries a pivoted step h which when folded out as in Fig. 1 is held suspended by jointed braces i that connect with the upper part of the brace proper B. On the inner side this downwardly extending brace B carries cushion-like projections j that are intended to bear'against the inner face of the wall below the window, on the room side of the window. When this downwardly projecting inner brace is to be folded up against the platform A for stowing away the entire contrivance, the step his first folded into the body of the front brace B, and after that the snap-spring lock 6 f is opened and the entire brace B folded against the un der side of the platform A, as in Fig. 5. In this position it can be locked by a set of hooks Z.

The rear downwardly projecting brace 0 forms part of a sliding carriage H which is guided on rails that are formed on the under side of the platform A. These rails are indicated at m in Fig. 4. A nut n is carried by this carriage H and receives a screw I which has its bearings in the platform,on theunder side thereof. By turning the screw, the entire carriage H with all its appurtenances is slid forward or backward and with it the downwardl y projecting brace, so that the distance between the braces B and G (which of course must depend upon the thickness of the wall and the extending sill) may, by turning this screw be determined.

In order to prevent the strain upon the brace C from bending the same outward and thus loosening the firm grip which the contrivance is intended to have upon the wall of the building, I have provided the brace O with outwardly and upwardly projecting prongs 0, whose lower ends are hinged or pivoted to said brace C, while their upper ends are closely under roughened rails 88 (see Figs. 3 and 4) that are secured to the under side of the platform A. These prongs 0 carry below their pivotal connection pa downwardly projecting arm g, which by a pin t that extends through the brace O connects with a plate to on the inner side of said brace, all as clearly shown in Fig. 3, sothat whenever the plateu is by contact of the brace C with the sill F- pressed outward, the prongs 0 will thereby be tightly forced against the serrated rails 8, thereby forming stiffeners for the brace O, bracing the same against outward pressure or displacement. Yet the moment the brace G is moved off the sill F by a turn of the screw I, the plate a becomes free and permits the prongs 0 to drop off the serrated rails, in manner indicated in Fig. 3, so as to thereby allow the brace G to be moved farther outward for taking the chair off the window.

In order to properly support the platform A in a horizontal position on a window having the wooden molding G, I have applied to the under side of the chair-platform A two wedge-shaped blocks J whose upper faces bear against the under side of the platform A, while their inclined lower faces are adapted and intended to bear wholly or in part on the Wooden molding G of the window-frame. These two wedge-shaped blocks J are united together by a cross-bar r which rigidly connects t-hem,and which cross-bar in its middle portion is carried by the carriage H, so that as the carriage H is moved backward and for ward byturning the screw I, the wed ge-shaped blocksJ will be moved forward and backward likewise. Still, in order to supply a means of relative adjustment between the blocks J J and the outer brace 0, when both are carried by the same carriage H, I have provided each block J on its inner face with a toothed barw, into the notches of which the ends of the rod r are able to be sprung. By. this means Iam enabled to first adjust each Wedgeshaped block J in its relation to the brace C, so that it will occupy the desired position for a particular window, and then, after that, the ends of the rodrhaving been sprung into the desired notch of each rack w, I am enabled by turning the screw I to move the wedgeshaped blocks and'the brace 0 simultaneously forward into the locking position, which is indicated in Fig. 1.

To the rear portion of the platform A, on its upper side, is hinged the upwardly extending brace-frame D, which at its upper end is pivotally connected with the ladder-frame E. This ladder-frame carries a series of pivoted steps L L that are supported byjointed braces X, as shown in Fig. 1. These steps L may also have inwardly projecting hinged eyes y, through which vertical bars M can be passed, whose lower ends enter sockets in the platform A for helping to steady the steps and as guides for the person using them. These steps and their connection with the upright bar M do not, however, constitute part of the present invention. The lower end of each upright of the ladder-frame E (see Fig. 8) carries an outwardly projecting snap-spring a with a press-button thereon, as at b and is adapted to enter a socket d that is formed on the outer side of the chair-platform A, both said sockets 01 being shown in Fig. 4. Each of these sockets d has a perforation for the purpose of receiving the prong of the snapspring (t so that as soon as the ladder upright E is inserted into the socket 01 the spring a will snap into the hole of said socket, and thereby lock the ladder-frame in the desired position,namely, to said socket. When afterward for folding the entire chair together it is desired to withdraw the ladderframe from these sockets, it is only necessary to press the springs 01, inward soas to clear them from the sockets, whereupon the ladder-frame may be withdrawn from the latter.

When the chair which I have endeavored to describe is to be folded together, the steps L L are first folded into the ladder-frame E (the rods M being withdrawn of course and the loops 1 being turned upon the steps); after this the springs a are pressed in, and the lower ends of the ladder-frame E are withdrawn from the sockets d After this theladder-frame E is folded against the brace-frame D, and both together are then folded down fiat upon the top of the platform A (see Fig. 5), to which they may then be hooked by a hook as at 6 The inner brace B is then, after first unfastening the lock 6 f (the step It having previously been folded into B), turned flat against the under side of the platform A, all as clearly shown in Fig. 5 and in this compact form the chair can be convenientlystowed away and retained until required for further use, when it is as conveniently spread apart into the operative position shown in Fig. 1'.

Having now described my invention, what I claim is 1. The combination of the chair-platform A having front downwardly extending ledge d and pin f on said ledge, with the hinged front brace 13 having upper cross-piece b adapted to contact with the inner face of said ledge and having snap-spring e adapted to connect with the pin f, substantially as and for the 3. The combination of the chair-platform A having inner downwardly projecting brace B with the outer downwardly projecting brace 0, means for moving the same substantially as described, with. the upwardly extending prongs 0 carried by and extending from said brace O, serrated rails s s on the under side of the platform A, and means substantially as described carried by the said brace O, for causing the prongs 0 to automatically engage the rails s s substantially as and for the purposes specified.

4. The combination of the chair-platform A, sliding carriage H, screw I for moving said carriage and downwardly projecting brace C attached to said carriage-,with the hinged upwardly projecting prongs 0 on said brace, said prongs having downwardly projecting arm q, and with the pin t projecting from said arm q through the body of the brace, substantially as and for the purpose specified.

5. The combination of the chair-platform A, sliding carriage H, screw I for moving said carriage and downwardly projecting brace 0 attached to said carriage, with the hinged upwardly projecting prongs 0 on said brace, said prongs having downwardly projecting arm q, with the pin 25 projecting from said arm q through the body of the brace, and plate u on the inner end of said pin, substantially as and for the purpose specified.

6. The combination of the chair-platform A with the downwardly extending sliding wedgeshaped blocks J J having racks w and with the sliding carriage I-I having downwardly projecting outer brace O, and with the crossbar *I' carried by said carriage H and having its ends free to be sprung into the notches of and for. the purpose described. 7

7. The combinationof the chair-platform A with the upwardly projecting hinged braceframe D and wit-hithe ladder-frame E pivoted to the upper part of said brace-frame D,said ladder-frame having springs a at the lower end, and with the perforated sockets d which are fastened to the platform A, all substanthe racks or toothed bars w, substantially as tially as and for the purpose herein shown and described. v

ANNA DORMITZER.

Witnesses:

JAMES ILSUYDAM, CHARLES E. SMITH.

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