US1448673A

US1448673A - Awning

Info

Publication number: US1448673A
Application number: US554757A
Authority: US
Inventors: Norvell Charles Burch
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-04-18
Filing date: 1922-04-18
Publication date: 1923-03-13
Anticipated expiration: 1940-03-13

Description

Mar. 13, 1923.

' c; B. VNORVELL AWNYING Filed Apr. 18, 1922 c Bu/wmezz, B)

WITNESSES ATTORNEYS Patented Mar. 13, 1923. 7

warns STATEQS'YI nane Parent 1 "Fr es.

CHARLES BURCH nonvELL, or niornuonnfvrnornra.

AWNING. 1

Application filed April 18, 1 922. Serial No. 554,757;

To all whom it may concern:

Be it known that I, CHARLES BNORVELL, a citizen of the United, States, and a resident of Richmond, in the county of Henrico, and State of Virginia, have made certain new and useful Improvements in Awnings,

rangement and combination of parts which will be hereinafter more fully described, and particularlypointed out in the appended claims, reference bein had to the accompanying drawing formlng a part of this specification and in which Figure 1 is a perspective view illustrating an embodiment of the invention in use upon abuilding;

Figure 2 is a detailed view in side elevation of the stop or control mechanism;

Figure 3 is a view in front elevation of the mechanism shown in Figure 2;

Figure 4 is a detailed view of the mounting of the bevel gear for driving the winding roll, and, V

Figure 5 is a detailed view in section 0 line 55 of Figure 2.

Referring to the drawings, wherein for the sake of illustration is shown the preferred embodiment of the invention, the numeral 10 designates an awning including, as usual, a swinging frame 11 and a winding roll or shaft 12 upon which the awning is coiled or wound when not in use. I The winding shaft or roll 12 is rotatablymount ed upon the winding roll or shaft 12 and arranged to maintain the bevel pinion 16 and bevel gear l5inoperative engagement. Pins 19: are carried by the hanger bearing lS'an'd pro ect inwardly of the bearing and are re ceived; in an annular groove 20 formed in so the short'shaft 17, whereby the short shaft 17 is held; against longitudinal movement and free to rotate. i Y

A coupling sleeve 21 connects the lower end of the short shaft 17 to thenpper end of 05 a screw 22, by-m'eanS 0f bolts 23 and 24:, extending through, the sleeve and through bolt holes provided in the short shaft-17 and the screw 22 respectively. The lower end of the screw 22 is connected to the upper end of a square shaft 25' by cmeans of a coupling 26 and bolts and nuts 27 and 28. The lower end of the square shaftj25 extends into the gear boxing 29, wherein suitable gears'ar'e arranged to actuate the square shaft from a crank 30 in the usual manner.

- Angle brackets designated at 32 and 33 are secured to the building orwindow frame and upon these brackets the guide rod 34.

is supported by means of channel shaped attaching plates 35 and 36 havingthreaded engagement with the guide rod, and nuts 37 and 38 threaded upon ends of the guide rod 34: and engaging the brackets. The horizontal arms or portions of thebrackets 32 and 33 are extended outwardlybeyond the connection of these arms with'the guide rod and these extensions are provided with openings which receive the short shaft 17 and screw 22 respectively, to prevent horizontal displacement of these parts. Preferably these horizontal arms or portions ofbrackets are reinforced by plates 39, a0 and 41, p

which are held from turning by the flanges of the attaching plates 35 and 36.

. A travelling nut 45 is provided and is formed with a threaded bearing which oper atively engages the screw 22. The travelling nut also includes a guide opening through which the guide rod 3a extends, the guide 1 rod being a sliding'fit in the guide opening f of the travelling nut.

When the crank 30 lower the awning the motion of the crank is transmitted through the square shaft 25,

screw 22, short shaft 17, beveled

gears

15 and 16 to the winding shaft or winding roll 12 and the winding roll or shaft winds or unwinds the awning 10 thereon accordingly as the awning is: being raised or lowered.

It is to be noted, however, that when the screw 22 turns, as'it must whenever the awnisturned to raise or ing is raised or lowered, the motion of the screw 22 will impart a rectilinear motion to the trat elling nut 45, since the threaded bearing of the travelling nut is operatively engaged with the screw and the guide openingof the nut is operatively engaged by the guide rod. The arrangement is such that when the awning is raised and completely wound around the roll or shaft 12, the travel ling nut will engage the lower end of the sleeve coupling 21, and so preclude the operator from applying any further winding; movement to the shaft 12 from the crank 30. Similarlv when the awning has been com-- pletely lowered that is unwound as far as it is supposed to unwind from the shaft 12 the travelling nut engages the attaching plate 36 and plate 34, to prevent further unwinding movement or further lowering of the awning. In this manner it is impossible for the operator to tear the awning by winding it in the wrong direction and thus applying destructive forces to the awning 10, since when the awning has been completely raised further motion tendingto raise the awning will be positively prevented by the action of the travelling nut and sleeve 21, the sleeve for this purpose constituting an abutment and similarly after the awninghas been completely lowered further lowering movement is prevented by the engagement of the travelling nut 45 with the

plates

36 and 40 which also constitute an abutment for this purpose.

' Iclaim:

1. In an operating means for awnings, an actuating shaft made up of sections, releasable means for coupling said sections to each other, andmeans cooperable with one of the sections for limiting the movement of the awning.

2. In an operating means for awnings, an actuating shaft made up of sections, one of said sections comprising a screw, couplin means between said sections, a travellingnut operatively engaged with the screw one of the couplings constitutingan abutment engageable with the travelling nut.

3. In an operating means for awnings, an actuating shaft made up of sections, one of said sections comprising a screw, coupling means between said sections, a travelling nut operatively engaged with the screw, one of the couplings constituting an abutment engageable with the travelling nut, and a guide rod operatively associated with the travelling nut for constrainingthe same to rectilinear movement.

CHARLES BURCH N ORVELL.