US1364887A

US1364887A - Automatic sash-raising mechanism

Info

Publication number: US1364887A
Application number: US422343A
Authority: US
Inventors: Rawlings Arthur Daniel; Rawlings Ernest John
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-11-06
Filing date: 1920-11-06
Publication date: 1921-01-11
Anticipated expiration: 1938-01-11

Description

A. 0. AND E. JIRAWLINGS.

AUTOMATIC SASH RAiSING MECHANISM.

APPLICATION HLED NOV. 6. i920.

Patented Jan. 11, 1921.

2 SHEETSSHEET 2- J1 .30 5 2053 35 gas .54

UITED STATES.

PATENT OFFICE;

ARTHUR DANIEL RAWLINGS, OF CLAP I-IAM, AND ERNEST JOHN-RAWILINGS, OF

BALI-1AM, LONDON, ENGLAND.

AUTOMATIC SASH-RAISI'NG MECHANISM.

T 0 all w 7mm it mag concern Be it known that we, ARTHUR DANIEL BAwLrNes and ERNEST Joi-IN RAwLiNes, subjects of the King of Great Britain and Ireland, residing, respectively, at 11 Sandmere road, Clapham, London, S. England, and'll Streathbourne road, Balham, London, S. England, have invented new and useful Improvements in orConnected with Automatic Sash-Raising Mechanism, of which the following is. a specification.

The invention is intended to be employed as an adjunct to'mechanism for automatically raising the sashes of motor cars and other carriages and to that construction of such automatic sash raising mechanism which comprises. a spring-actuated roller provided with fusee-barrels, a brake acting on said roller, and a cord secured at its ends to said fusee-barrels and passing under pulleys supported in bearings at the bottom of the sash, see specification of United States Patent No. 1,154,432, granted to the present applicants. Inthe case of the sash-raising mechanism covered by said patent the sash is lowered by a pull on a cord or the like which is attached to said spring-actuated roller and passes through a slot in the casing protecting the parts of the mechanism.

lhe present invention has been devised with the object of providing mechanism by which the above referred to pull-cord or the like shall be wound up as soon as it is released.

Said mechanism consists of a drum for the pull-cord rotatably -mounted on the spring-actuated roller of the sash-raising mechanism, a clock-spring secured at one of its ends to the casing inclosing the sashraising mechanism and at'its other end to a bobbin or surface rotating with said drum, a coiled spring adapted to be contracted on to the spring-actuated roller of the sashraising mechanism and attached at one of its ends to said drum and at itsother end to means by which the last mentioned end of said coiled spring is temporarily retained during the first part of the pull exerted on the pull-cord or the like.

The invention is illustrated by the accompanying drawings, Figures 1 to 5 showing one embodiment, and Figs. 6 to 11 a second embodiment of the invention.

Fig. 1 is an elevation, as seen fromits outer side, of a casing containing the first Specification of Letters Patent.

Patented Jan. 11, 1921.

Application filed November 6, 1920. Serial No. 422,343.

embodiment of the mechanism of the present invention and the automatic sash-raising mechanism with which said'embodiment is to be used. Fig. 2 is a longitudinal section, on an enlarged scale, illustrating the parts of said embodiment, Figs. 3, 1 and 5 are transverse sections, drawn to a larger scale, taken 011 the lines A-B, CD and E-F of Fig. 2.

Fig. 6 is an elevation, corresponding to Fig. 1, showing a second embodiment of the invention. Fig. 7 is a longitudinal section, on an enlarged scale, illustrating the parts of this second embodiment. Figs. 8 and 9 are transverse sections, drawn to an en la'rged scale, taken on the lines GH, and IJ of Fig. 7. Figs. 10 and 11 are a side view and an end View of the bent strip of spring steel used in this embodiment.

In all of the figures, where the parts are shown, 1 is a shaft controlled by means of a coiled spring 2. 3 is a roller rotatably mounted on the shaft 1, 42 are fusee-barrels secured to the

roller

3, and 5 is acord or Wire which is secured at itsendsto' and is wound on the fusee-barrels & and passes around pulleys supported in bearings at the bottom of the sash of a motor car or other vehicle. 6 is a casing inclosing the sashraising mechanism, and 7 are bearings provided in the casing for the shaft 1. dis a brake consisting of a multi-coil spring band which is secured at one of its ends to the casing 6 and normally grips the roller 3 and thereby retains said sash in any position to which it may be raised or lowered. 9 is a lever for releasing the brake 8, which is pivotally mounted in the lower part of the casing 6. One arm of the lever 9 is bent and passes through a hole 10 formed in the front of the casing 6 and terminates in a button 11, while the other arm of the lever 9 is adapted when said button is pressed toward the casing to bear against a stud 12 fixed to the free. end of the coil 8 and relieve the ten sion upon the roller and. so allow the sash to be raised by the mechanism. 13 are holes formed in a collar 14, fixed to one end of the shaft 1, by means of which and a rod fitting said holes the spring 2 may be wound fixed to the inner side of the door of the motor car or other vehicle, and is secured to said door by means of screws passing through holes formed in lugs 19, an arrangement which allows of ready access to the parts of the sash raising mechanism, as all that is necessary is to remove said screws, when the casing can be. turned downward on the hinges 17. 20 is a pull-cord for lowering the sash and 21 is a slot formed in the easing 6 for said cord.

All of the above enumerated parts form the essential parts of an automatic sashraising mechanism of the kind described and illustrated in the specification of U. S. A. Patent No. 1,154,432, and adapted to be used with the present invention.

Referring first to the embodiment of the present invention illustrated by Figs. 1 to 5, 22 isa drum, preferably provided at its ends with flanges, which is rotatably mounted on the spring-actuated roller 3 with its center coincident with the vertical center line of the door of the motor car or other carriage, and to this drum is attached the inner end of the pull-cord 20. 23 is a bobbin rotatably mounted on the spring-actuated roller 3 at one side of the drum 22 and connected to same so that the two rotate as one piece. 24 is a clock-spring which is wound up when the pull-cord 20 is pulled and returns said pull-cord when the latter is released by the user, and is secured at one of its ends to the barrel of the bobbin 23 and at its other end to the casing 6. 25 is a sleeve which is rotatably mounted on the spring-actuated roller 3 at the side of the drum opposite to that occupied by the bobbin 23, and cooperates with a friction device, such as a bent metal strip 26 secured at one of its ends to the casing 6, which offers a certain amount of resistance to the rotation of said sleeve. 27 is a length of spring steel which is bent to such shape as to bear with its free end against the inner surface of the sleeve 25, and is secured to a collar 23 rotatably mounted on the spring actuated roller 3. 29 is a length of coiled wire, acting as a clutch, which is placed within the drum 22 and is connected at one of its ends to said drum and at its other end to the collar 28.

The above described parts cooperate in the following manner:

Normally the tassel at the free end of the pull-cord 20 will be close to the slot or opening 21 in the casing 6. If the occupant of the motor car or carriage wishes to lower the sash he takes hold of said tassel and pulls on the pull-cord 20. At the commencement of said pull the drum 22 will be rotated through a small angle and the end of the coiled wire 29 attached to the drum 22 will be twisted. As a result of said twisting the coiled wire 29 will be contracted on to and grip the spring actuated roller 3, as the end of the coiled wire 29 which is opposite to that connected to the drum 22 will be held by the grip obtaining between the interior surface of the sleeve 25 and the free end of the length of spring steel 27 carried by the collar 28. As soon as the coiled wire 29 is contracted on to the spring-actuated roller 3 to a degree sufficient to grip said roller the latter and all of theparts loosely mounted thereon will rotate together and the clock-spring 24 will be wound up. Immediately the pullcord 20 is released the clock-spring 24 will commence to unwind. As a result the coiled wire 29 will cease to grip the spring-actuated roller 3, which will be held by its brake 8, while the drum 22 the bobbin 23, and the collar 28 to which is secured the length of spring steel 27 will be rotated backward, the outer part of said length of spring steel slipping on the inner surface of the sleeve 25. At the end of said backward rotation the tassel attached to the end of the pull-cord 20 will be returned to its original position.

Referring now to the modified construction of mechanism illustrated by Figs. 6 to 11, 30 is a drum rotatably mounted on the central part of the spring-actuated roller 3. 31 is a clock-spring which is secured at its inner end to an extension 32 of the drum 30 and is secured at its outer end to the inner surface of the casing 6. 33 is a bushing secured to the interior of the drum 30 and made of such length as to project beyond the end of the drum opposite to that provided with the extension 32. 34 is a flanged sleeve mounted on the projecting part of the bushing 33, and 35 is a suitably bent strip of metal secured at one of its ends to the casing 6 and bearing against the periphery of said flanged sleeve. 36 is a segmental slot formed in the projecting part of the bushing 33. 37 is a bent strip of spring steel one part 37 of which, adapted to serve as a clutch for operatively connecting the drum 30 to the spring-actuated roller 3, is connected at 38 to the bushing 33, while the remaining part; 37, adapted to temporarily hold the outer end of the first mentioned part 37 as hereinafter described, is passed, as shown in Fig. 8, through the slot 36 and around the projecting part f the bushing 33 and bears against the inner surface of the flanged sleeve 34.

The parts of the embodiment of the invention just described cooperate asfollows Normally the tassel at the free end of the pull-cord 20 will be close to the slot 21 formed in the casing 6. If the sash of the door is to be lowered the occupant of the motor car or carriage takes hold of the tassel and pulls on the pull cord 20. During the first part of the rotation of the drum 30 the part 37 of the member 37 will be contracted on to the spring-actuated roller 3, as its outer end will be held owing to the frictional grip obtaining between the outer portion of the second part 37 of the member 37 and the flanged sleeve 34. As soon as the part 37 of the member 37 grips the roller 3 the latter and the drum 30 will rotate as one and the flanged sleeve 34 will rotate in the bent strip 35, the clock spring 31 being wound up. Immediately the pull-cord 20 is released the clock-spring 31 will commence to unwind. As a consequence the part 37 of the member 37 will cease to grip the spring-actuated roller 3, which will be held by its brake 8, and the drum 30 and all of the other rotatable parts of the mechanism, with the exception of the flange sleeve 34, will be rotated backward. When the clock-spring has been unwound the tassel of the pull-cord Will have been returned to its original position.

In the figures of the accompanying drawings in which the clock-spring is shown in section the latter is, for the sake of more clearly illustrating the parts of the invention, shown as consisting of but two to three turns. its will be readily understood said spring consists of a considerable number of turns.

Having now described our invention, what we have invented and desire to secure by Letters Patent of the United States is as follows 1. Means for use with automatic sashraising 'meohanism of the kind specified herein, for winding up the pull-cord or the like by which the spring-actuated roller of said mechanism is rotated, consisting of a drum for said pull-cord or the like rotatably mounted on said spring-actuated roller, a clock-spring secured at one of its. ends to the casing inclosing said sash-raising mech a'nism and at its other end to a bobbin or surface rotating with said drum, and a clutch consisting of a coiled spring adapted to be contracted on to the spring-actuated roller of the sash-raising mechanism and attached at one of its ends to said drum and operatively connected at its other end to means by which the last mentioned end of said coiled spring is temporarily retained during the first part of the pull exerted on the pull-cord or the like, substantially as described.

2. Means for use with automatic sashraising mechanism of the kind specified herein, for winding up the pull-cord or the like by which the spring-actuated roller of said mechanism is rotated, consisting of a. drum for said pull-cord or the like rotatably mounted on said spring-actuated roller, a clock-spring secured at one of its ends to the casing inclosing said sash-raising mechanism and at its other end to a bobbin rotating with said drum, a sleeve rotatably mounted on said spring-actuated roller at the side of said drum opposite to that occupied by said drum and cooperating with a bent strip of metal or other friction device, a collar housed within said sleeve and rotatably mounted on said spring-actuated roller, a length of spring steel secured at one of its ends to said collar and bearing at its other end against the inner surface of said sleeve, and a coiled spring adapted to be contracted on to said spring-actuated roller and secured at its ends to said drum and collar, substantially as described.

3. Means for use with automatic sashraising mechanism of the kind specified herein, for winding up the pull cord or the like by which the spring-actuated roller of said mechanism is rotated, consisting of a drum for said pull-cord or the like rotatably mounted on said spring-actuated roller and provided at one of its ends with an extension, a bushing secured to the interior of said drum and projecting beyond the end thereof opposite to that provided with said eXtension,a segmental slot formed in the projecting part of said bushing, and a bent strip of spring steel comprising a cylindrically disposed part secured at one of its ends to said bushing and a second part pass ing through the segmental slot formed in said bushing and bearing against the inner surface of said flanged sleeve, substantially as described.

In testimony whereof we have signed our names to this specification.

ARTHUR DANIEL RAWVLINGS. ERNEST JOHN RAWLINGS