US1736634A - Awning attachment - Google Patents

Description

Nov. 19, 1929. `w. E. v. sHAw wNING ATTACHMENT Filed July 16, 1928l A TTOENEVJ l j Patented Nov. 19, 1929 WILLIAM v. SHAW, or MINNEAPOLIS, MINNESOTA .AXVNING ATTACHMENT Application led July 16,

This invention relates to improvements` in awnings 01' curtains for Windows, and particularly relates to a device as an attachment which can be. applied t automobile Windows to provide a curtain awning therefor.

Objects of the invention are to provide a de,- vice which can be applied as an attachment to any Window; to provide Such a device Which is operative by the ,curtain spring alone; to

v provide an improved paWl: and ratchet mechanism including a tubular arm having a pawl slidable therein, along with means for detachably securing the pawl Within the arm for limited movement and providing a simple 1.5 and cheap construction wherein no springs are used; to provide, an improved arm for the purpose set forth formed from a Single piece of sheet metal and rolled; to provide a bushing which acts as a vstop in conjunction with a detachable stop carried by a pawl rod which traverses the bushing, to limit Withdrawal of the rod; and to arrange the parts so that the stop is maintained in operative relation after placement, and after the parts have been adjusted to operative position.

Features of the invention alsol include all details of construction, as Well as combinations and suhfcombinations of the parts.

Objects, advantages and features of the in- 3-0 vention will appear in the description of the drawings forming a part of this application, and in said drawings Figure 1 is a face vieW of a Window equipped with one form of the present device,

5 to illustrate the principles of the invention;

Figure 2 is a vertical longitudinal section on line 2 2 offFigure 1 looking in the direction 0f the arrow;

Figure 3 is a detailed section illustrating the connection of the paWl With the pavvl arm and ratchet;

Figure 4; is a detail sectional view, the parts positionally corresponding to those shown in Figure 2; and

Figure 5is an end View of the paWl arm.

A frame having an opening therein is generally designated at 1. This may be the Window of aneutomobile. Attached on each of the opposite vertical faces 2 of the opening is a plate 3 suit-,ably secured as by screvvs t pass 1928. Serial N0. 233,075.

ing through longitudinally disposed, slots `51 Tivo of these slots are used but only one is shown in Figure 3. Each one of the plates 3 has a cylindrical boss 53, the periphery of which is provided with ratchet teeth 6 extend;

ing in direction of the axis of the cylinder, said ratchet teeth, in this instance, only eX- tending through an arc of about 1803 and the teeth being faced in a direction outwardly from the Window opening.

A curtain roller is indicated at 10 and rotatably stepped in the plates 3, and has thereon a curtain 11. This roller may be of any approved construction including a spring, but

is not provided With the usual'ratchet mechamsm.

An arm is provided for each boss 53 and is pivoted to swing about the boss axis. Each arm comprises a tubular portion 12 anda flat portion 13. The tubular portion 12 is open at that side Which faces the plates 3 to provide a longitudinal slot 15 and also to permit the t-ubular element to be brought as closely as possible to the plate as best shown in Figure 5, thus making for compactness. 7

This slot extends the full, length of the tube 12. The tube 12 is enlarged as at 2O adjacent the ratchet, thus providing tube portions each of adiiferent diameter, merging into one anv other. This arrangement constitutes an important feature ofthe invention. The enlarged tubular portion 20, as best shown in Figure 2, merges into the flat portion 13', and the slot 15 is co-eX-tensive With this enlarged tubular portion. The tv vo portions v12 and 2() provide interior diameters one greater than the other.. Within the tubular portion 12 is inserted and snugly fitted a bushing 25, and the tube 12 has aninturned portion 26 as a lstop to prevent outward movement of the ure 2 it will be seen that the roller spring' acts on the curtain 11 in a manner to translate the pawls 1n direction of the arrow a, when the parts are positioned as shown in 'lull lines in Figure 2. In this full line position, the pins` 40 limit the outward movement of the pawls 35 by engaging against the projecting inner ends 28 of the bushings 25 as stops, see Figure 4, the parts of which positionally correspond to those of Figure 2. In this position the pawls are free of the teeth 6.

A feature of the invention includes the arrangement of the pin in relation to the end of the bushing 25 and to the enlarged tubular portion 20, and pointV of mergence between this portion and the portion 12. In assembling the device the bushing 12 is p assed over a pawl arm 35 and then rotated to bring the opening 41 in'opposition to the slot 15, and the pin 40 is thenl dropped into the open ing 41. After introduction of the pin 40 the element 12 is turned, in this instance, through an angle of 90o so that.' as shown 'in Figure 4, the pin cannot thereafter be disengaged. It will be noted that the length of the pin is less than the inner diameter of the tubular portion 20, so that slight play is allowed. It will again be noted that the tube 25 projects beyond the point of mergence 2O of the tube 12 with enlarged tubular portion 20 so that there is no possibility of the ends of the pin engaging against the Wfills at point of emergence, to am. The pin has a limited linear movement. In disassembling, the ele- Inrent 12 is merely turned to a position in which the pin is free to fall through the slot 15. As shown in dot-and-dash lines in Figure 4, the movementof the pin 40 toward the ratchet teeth 6 is not sufficient to allow it to be disengaged from the enlarged tubular portion 20, that is is not sufiicient'to allow it to travel outwardly beyond this enlarged tubular portion, ina direction toward the teeth,

By the use of thisinvention, no spring is required, the device is simple,cheap and is easy to assemble. It will, be understood that after the introduction of the pin and after turning of the element 12 or of the rod so that the pin occupies a positionshownin Figures 3 and 4, a headed pivot pin 49 is then passedthrough the opening `50 of the flat portion 13 and through a spacing element 51, then through an opening 52 of the ratchet carrying boss or projection 53 into a depression 54 of this boss. A washer 56 is engaged over the pin 49 and a split key 57 is applied as shown.

It is not necessary that. the assembly be made in exactly the way described because, as a matter of fact, the unit including the elements 3, roller 10, and the tubular elements 12 with the frame having the pawl arms 35 are sold as a unit and are applied to the window opening. However, in assembling the opening 41 must be brought in opposition to the slot 15, the pin is then dropped into the opening, and either the element 12 or the pawl or rod 35 is turned through a sutiicient angle to prevent disengagement of the pin.

Different positions of the curtain are shown in Figure 2. VIt will be seen that when in any position except the full line position of this figure, the pull on the curtainv 11 is such as to cause the pawls or rods 35 to be urged in the direction of the dotted arrow b. In i the intermediate position shown in dotted lines in this figure, if itis desired to have the device assume the position shown in full lines, the operator merely pulls in the direction of the dotted arrow c, tov release'the pawls, or if desired the-elements 12 may be rotated in direction of the arrow CZ until this.

element passes the dotted line e after which the curtain will act to continuethe motion in thesame direction to the position shown in full lines in this figure.

It will, of course,` be understood that the' elements 3 are provided with suitable openings to receive the projections 60 ofthe curf tain 10 so that the spring will act properly.

It will be understood that'thef provision of the inturned portion 26 to prevent outward movement of the bushingis a feature of the invention.

I claim as my invention:

1. A device of the class described having tubular portions of different diameters one merging into the other, a sleeve. fitting within that tubular portion of small diameter and projecting into the tubular portion of larger diameter, a rodslidable in the sleeve and proj ecting therebeyond, a pin loosely traversing the projecting part of theV rod and of less length than the bore of the enlarged tubular portion, and a ratchet `element beyond the tubularportionwith which the vrod is engageable to` form a pawl and ratchet combination. Y y

2. A window having a spring-operable curtain. roller arranged therein, and having a cur- I tain, a pair of ratchet elements respectively secured atrthe sides of the window, a tubular elementfor each ratchet element mounted to swing about the axes of the ratchet elements,

each element having tubular portions of different diameters and each having a sleeve secured in that tubular portion of small dialneter and projecting into the tubular portion of larger diameter in direction of the. ratchet element, a frame connected with the curtain and having two arms each as a paWl slidable in a respective sleeve, pins loosely traversing respective arms Within the enlarged diameter portions of respective tubular elements, each pin engageable with the corresponding sleeve to limit Withdrawal of the pavvl, the end of the pawls being engageable With the teeth, and the length of each pin being less than the inner diameter of the corresponding enlarged tubular portion.

3. ln combination, an element having ratchet teeth, a pivoted arm associated there- With and having a tubular extension having portions of diiferent diameters with that portion ot" largest diameter nearest the corresponding ratchet element, a bushing held Within a portion of smaller diameter and eX- tending into the portion of larger diameter, a. rod slidable Within the bushing as a paWl and engageable Wit-h the teeth of the ratchet element, a pin loosely traversing the rod and arranged to engage the bushing as an abutment after disengagement of the paWl from a tooth, the tubular portion of largest diameter being open at one side to permit the pin to be dropped into operative relation to the paWl, the arrangement being such that after the pawl is rotated to operative position in relation to the ratchet, the walls ot the enlarged tubular portion act to prevent disengagement of the pin.

4. An arm rolled from a single piece of metal to provide tubular portions oi' different diameters one merging into the other, a bushing fitted in the tubular portion oit smaller diameter and extending into the other tubular portion beyond the point of mergence, a rod slidable in the bushing and projecting therebeyond into the enlarged tubular portion, a pin loosely traversing the rod and adapted to engage the end of the bushing as a stop, the longitudinal edges of the arm being spaced to provide a longitudinal slot through which the pin can be dropped into operative relation to the rod when the rod is in one posit-ion, and to flatten the tubular arm, on that side` the Width of the slot being such that after introduction of the pin and turning of the rod to operative position, the Wall ot' the enlarged tubular portion acts to prevent pin disengagement.

5. A rotatably mounted spring curtain roller and curtain thereon, a pair of ratchet elements, an arm for each ratchet element sWingingly associated therewith, each comprising a tube having, two bore portions of different diameters, a bushing Within that bore of small diameter projecting into the bore of large diameter as a stop, a frame connected to the curtain and having extensions as paWls one i'or each bushing and slidable therein and engageablewith the teeth of said ratchet after passage into said large diameter portion beyond the bushing, a pin detachably associated With each paWl as a stop engageable With the bushing to limit outward movement thereof in a direction away from the ratchet element, and said tube at the enlarged portion being open at one side to permit the pin to be operatively engaged with the pawl, the arrangement being such that after introduction of the pin and after rotation ot one part upon another to bring the pawl in engageable relation to the ratchet, the pin is held by the Wall of the enlarged bore portion against accidental disconnection.

ln Witness whereof, I have hereunto set my hand this 3rd day of July, 1928.

WILLAM E. V. SHAV.

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