US2186816A

US2186816A - Coaster brake

Info

Publication number: US2186816A
Authority: US
Publication date: 1940-01-09
Anticipated expiration: 1957-01-09

Description

Jan. 9, 1940. BERN|ER 2,186,816

' 7 COASTER BRAKE Filed Jan. '3 1938 2 Sheets-Sheet 1 INV EN TOR.

ATTORNEY.

Jan. 9, 1940. A. H. BERNIER COASTER BRAKE 2 Sheets-Sheet 2 V Filed Jan. 3, 1938 III I Lnillrl l lll/Il INVENTOR. Mfifi ATTORNEY.

Patented Jan. 9, 1940 o-Nrreo STATES, PATENT-Q emee ooAsTER BRAKE V Adler H..Bernier, .netieie 'reh.

Application January 3, 1938; Serial'No. 182,961

7 Claims.

This invention relates to toy vehicles of the pedal-propelled type and has for its object to provide a mechanism between' the propelling wheel anolthe pedals which propel the'same whereby movement of thepedals in one direction effects rotation of the wheel, and movement of the pedals in-the opposite direction effects application'of a brake.

Another object of the invention is to provide mechanism of the above mentioned character for operatinga brake of the-type comprising a pivoted shoe adapted to frictionallyengage the periphery of the propelling wheel, the mechanism further being designed so that the pedals may be held stationary while the propelling'wheel is rotating and the brake shoe is in a non-braking position for purposes of coasting.

Another object is to provide mechanism of the character above mentioned embodying means for D rendering the mechanism inoperative incident-to rearward movement of the propelling wheel whereby the propelling wheel may rotate reversely-unaccompanied by reverse movement of the axle and pedals.

v With the above and other ends in view the invention is more fully disclosed with reference to the accompanying drawings, in which Fig. 1 is a fragmental elevation of a toy vehicle with the invention assembled thereon;

Fig. 21s a fragmental plan, with parts shown insection;

Fig. 3 is an elevation of the'present mechanism similar to the showing thereof in Fig. 1 but with operating parts in dotted lines;

Fig.4 is a section taken on the line 44 of Fig. 3;

Fig. 5 is an exploded View, similar to Fig. 4;

Fig. 6 is a section illustrating a detail taken on the line 6-4; of Fig. 3;

Fig. 7 is a section taken on the line 1-1 of Fig. 4;

Fig. 8 is a section taken on the line 88 of Fig. 4;

Fig. 9 is a section taken on the line 99 of Fig. 7, and

Fig. 10 is a broken section through one main part.

A forked toy vehicle frame I has an axle 2 rotatably journalled therein, and cranks 3 are mounted on opposite ends thereof. On the shaft 2 is a wheel hub- 4 and a tread 5 is'supported with respect thereto by spokes 22, a fragment of the tread and spokes being illustrated in Figs. 1 and 2. Attached to the wheel hub 4 is a disk 6 which carries an annular body I having internalratchet teeth" 8-'.- Fastenedto the axle Z is-a plate 9;- disposed" within the annular body and having-pawls I0 pivoted thereon and adapted to engage the ratchet teeth 8 As the ax-le:2 is rotated in one-direction, contra-clockwise as illustrated in Fig. "7, the pawls Ill-' fall by gravity into engagement with 1 the ratchet teeth 8 and establish a driving connection between the axle and wheel to causerotation of the wheel. In the event rotation'of the. axleZ is reversed, the paw'ls-lll 'ridetover the ratchet teeth 8; as also is the case when the wheel is rotated in a contra-clockwise direction while'the axle ,2 is stationary.

The mechanism above described is housed: in a'drum H, mounted loosely upon the axle 27, and having -pins= l2i perpendicular to the main portion thereof The pins ii -are adaptedtor engage the pawls l fl" to' retract them. from engagementwith' the ratchetteeth ii whenarelative rotation takes" place between the drum l l and the plate 9. Also mountedlon thefaceoft' the drum Il-is a stud l3: adapted; as hereinafter-described. to. engage a similarly. positioned stud: M on: the plate: 9*.

Springs are connected to the plate 9 and the IS. The plate. lliis connected by a link l9 to a Y brake shoe: pivoted on theframe I,- andadapted. to engage the wheel tread 5 to retard rotation of the wheel. A spring 2|, connected to the plate ll, normally holds the brake shoe 20 retracted.

In operation, the axle 2 may be rotated by the pedals 23 to cause rotation of the plate 9 contraclockwise, Fig. '7, in which case the pawls Hi impart rotation through the ratchet teeth 8, annular element 1 and disk 6 to the wheel. Inthe event the axle is held stationary while the wheel is rotating, the pawls l0 ride freely over the ratchet teeth 8. If the axle 2 is rotated in the reverse direction, the stud I3 moves into engagement with the stud I4 and imparts a reverse rotation to the drum I I. The ratchet It, being reversely rotated with the drum H, exerts a thrust against the pawl I 8 and rocks the plate I! to apply the brake. If the vehicle is pushed rearwardly, the annular element 1 becomes the impelling member and. the drum I I is held stationary by the pawl 18, the pawls ID are engaged by the pins I 2 and are retracted from the ratchet teeth 8. Reverse rotation of the wheel may, therefore, take place unaccompanied by similar rotation of the axle.

This invention may be developed within the scope of the following claims without departin from the salient features of the said invention, and it is desired that the specifications and drawings be read as being merely illustrative and not in a limiting sense, except as necessitated by the prior art.

What I claim is:

1. In combination, a pedal operated axle, a wheel loosely mounted on said axle, inter-engaging ratchet and pawl means connected to said wheel and axle respectively, the pawls of said mechanism being gravity biased to operative relationship with said ratchet, and means operated by reverse rotation of the wheel for retracting said pawls.

2. In combination, a pedal operated axle, a wheel loosely mounted on said axle, an over-riding clutch between said axle and wheel and having gravity biased means for establishing a driving connection therebetween upon rotation of the axle in one direction, means operated by reverse rotation of the wheel for rendering said gravity biased means inoperative, a pivoted brake shoe adapted to engage the tread of said wheel, and means operated by reverse rotation of the axle for actuating said brake shoe.

3. In combination, a pedal operated axle, a wheel loosely mounted on said axle, inter-engaging ratchet and pawl means connected to said axle and wheel respectively, the pawls of said mechanism being gravity biased to operative relationship with said ratchet, means operated by reverse rotation of the Wheel for retracting said pawls, a pivoted brake shoe adapted to engage the tread of said wheel, and means operated by reverse rotation of the axle for actuating said brake shoe.

4. In combination, a pedal operated axle, a wheel loosely mounted on said axle, an over-riding clutch between said wheel and axle, a brake shoe, a rocking element for actuating said brake shoe, a drum completely surrounding and enclosing said clutch, a second over-riding clutch between said drum and rocking element and reversely disposed with respect to the first clutch, means yieldingly opposing reverse rotation of the drum, and means for reversely rotating said drum incident to reverse rotation of the axle to impart movement to said rocking element.

5. In combination, a pedal operated axle, a

wheel loosely mounted on said axle, an annular element secured to said wheel and having internal ratchet teeth, a pawl carrier secured to the axle and having gravity biased pawls adapted to engage said ratchet teeth, a drum enclosing said ratchet and pawls, said drum being loose upon said shaft and having means for retracting said pawls incident to relative rotation between the pawl carrier and drum, co-operating studs on said pawl carrier and drum for causing reverse rotation of the drum incident to reverse rotation of the axle and pawl carrier, yielding means normally spacing said studs, and a brake actuated by said reverse rotation of the drum.

6. In combination, a pedal operated axle, a wheel loosely mounted on said axle, an annular element secured to said wheel and having internal ratchet teeth, a pawl carrier secured to the axle and having pawls biased by gravity to engage said ratchet teeth, a drum enclosing said ratchet and pawls, said drum being loose upon said shaft and having means for retracting said pawls incident to relative rotation between the pawl carrier and drum, co-operating studs on said pawl carrier and drum for causing reverse rotation of the drum incident to reverse rotation of the axle and pawl carrier, a rocking element mounted on said axle, ratchet and pawl means rendered operative by reverse rotation of said drum for rocking said rocking element, and a brake actuated by rocking movement of said rocking element.

'7. In combination, a pedal operated axle, a wheel loosely mounted on said axle, an annular element secured to said wheel and having internal ratchet teeth, a pawl carrier secured to the axle and having gravity biased pawls adapted to engage said ratchet teeth, a drum enclosing said ratchet and pawls, said drum being loose upon said shaft and having means for retracting said pawls incident to relative rotation between the pawl carrier and drum, co-operating studs on said pawl carrier and drum for causing reverse rotation of the drum incident to reverse rotation of the axle and pawl carrier, a rocking element mounted on said axle, ratchet and pawl means rendered operative by reverse rotation of said drum for rocking said rocking element, a brake shoe adapted to engage the tread of said wheel, and means connecting said brake shoe to said rocking element for operation by rocking move ment of the latter.

ADLER H. BERNIER.