US2422521A - Pivoted member - Google Patents

Description

W. H. BASELT PIVOTED MEMBER June 17, 1947.

Original Filed JL me 12, 1944 2 Sheets-Sheet 1 v IINVENTOR.

June 17, 1947. A w. H. BASELT 2,422,521

- PIVOTED MEMBER Original Filed June 12, 1944 2 Sheets-Sheet 2 IN VEN TOR.

Patented June 17, 1947 PIVOTED MEMBER Walter H. Baselt,

Chicago,

111., assignor to American Steel Foundries, Chicago, 111., a corporation of New Jersey Original application June 12, 1944, Serial No. 539,885. Divided and this application April 23, 1945, Serial No. 589,816

8 Claims.

This invention relates to brake equipment and more particularly to a novel brake lever fulcrum block. The present application is divided out of a parent application, United States Serial No. 539,885, filed June 12, 1944, for Brake.

A general object of the invention is to design a fulcrum block having pivot means accommodating a twisting or torsional action thereof during relative torsional movement between a braked member and the brake lever support means, as more fully described in said parent application.

A more specific object of the invention is to provide a fulcrum block having pivot means at opposite ends thereof and brake lever fulcrum jaws at opposite sides thereof for the reception of associated brake levers.

Another object of the invention is to design a fulcrum block such as above described wherein a transverse slot is provided extending between the fulcrum jaws and adapted to accommodate actuating mechanism for the associated brake levers.

In the drawings:

Figures 1-3 illustrate my novel fulcrum block in detail, Figure 1 being a top plan view thereof, Figure 2 being an end elevation, and Figure 3 being a side elevation.

Figures 4 and 5 illustrate the block with brake mechanism associated therewith, Figure 4 being a top plan view of the structure, and Figure 5 being a sectional view taken in the transverse vertical plane indicated by the line 55 of Figure 4.

Describing the invention in detail and referring first to Figures 1-3 inclusive, the fulcrum block generally designated 2 is a casting of skeletal form having a central rectangular body portion 4 with a pair of laterally projecting lugs B, 6 at each side thereof defining a fulcrum jaw 8 (Figure 2) therebetween, the lugs of each pair having aligned bushed openings ID, If] affording fulcrum means adapted to accommodate associated pivot or fulcrum pins for the brake levers fulcrumed within the jaws 8, 8 as hereinafter described. The junctures of the lugs 6, 6 with the body portion 4 are preferably reinforced by aligned ribs l2, l2 extending respectively between the lugs at the top and bottom of the block 2.-

Extending transversely through the body portion 4 of the casting is a transverse slot I4 adapted for the reception of associated brake lever actuating mechanism, as hereinafter described, and integrally formed with the casting within said slot are top and bottom finished bearing pads I6 and I8 (Figure 3) adapted to afford suitable bearing areas against which portions of said mechanism may slide.

The front end of the block 2 is provided with a finished boss 20 with a trunnion 22 projecting therefrom, and the rear end of the block 2 is provided with a similar boss 24 with a trunnion 26 projecting therefrom, said trunnions 22 and 26 accommodating pivotal movement of the block 2 with respect to the associated support structure, as hereinafter described.

Referring now to Figures 4 and 5, the block 2 is illustrated in combination with a brake mechanism, said mechanism comprising a pair of brake levers 28, 28 received within respective jaws 8, 8 and fulcrumed to the lugs 6, 6 by pivot pins 30, 38. Actuating means is provided for the levers 28, 28 in the form of a toggle comprising a pair of toggle levers 32, 32 pivotally interconnected by a pin 34 (Figure 5) which is adapted to slide against the top and bottom bearing pads l6 and I8. The toggle levers 32, 32 are pivotally connected to respective brake levers 28, 28 as at 36, 36 (Figure 4). The toggle is operated by a lever 38 which extends through a complementary slot in one of the brake levers 28 and comprises a nose portion 40 adapted to engage the toggle at the knee or joint thereof, said lever 38 being pivotally fulcrumed by the associated pin 30.

It will be clearly seen in Figure 4 that the trunnions 22 and 26 of the block 2 are received within complementary openings in the walls 42, 42 of the associated support structure, whereby the block 2 is permitted a pivotal or torsional movement with respect to said support structure during actuation of the brake levers 28, 28, as described in detail in said parent application.

It is to be understood that I do not wish to be limited by the exact embodiment of the device shown which is merely by way of illustration and not limitation as various and other forms of the device will, of course, be apparent to those skilled in the art Without departing from the spirit of the invention or the scope of the claims.

I claim:

1. A brake lever support block comprising a substantially rectangular body portion, a pair of spaced lugs at each side of said block projecting laterally from said portion at the top and bottom thereof respectively, each pair of said lugs comprising vertically aligned pivot means for an associated brake lever, coaxial pivot means integrally formed with said block at opposite ends thereof, and a substantially horizontal transverse slot extending through said block and communicating with the space between each pair of lugs, said block comprising top and bottom bearing pads integrally formed thereon within said slot.

2. A brake lever fulcrum block comprising a horizontal lug at each side thereof, a vertical opening through each lug adapted for pivotal connection to an associated brake lever, coaxial substantially horizontally extending pivot means 7 at opposite ends of said block adapted to accom- 1 modate a pivotal mounting therefor on an associated support structure, and a transverse slot through said block adapted for the reception of associated actuating means for said levers.

3. A brake lever support block comprising a substantially rectangular body portion, a pair of spaced horizontal lugs projecting laterally from said portion at the top and bottom thereof repair of said lugs.

'7. A lever fulcrum block comprising horizontal fulcrum jaws at opposite sides thereof, a transverse horizontal slot therethrough extending between said jaws, oppositely spaced bearing pads integrally formed on said block within said slot,

said jaws comprising vertical pivot means for spectively, said lugs comprising vertical pivot means for an associated brake lever, and coaxial pivot means integrally formed with said block at opposite, ends thereof and extending horizontally therefrom. or v a v 4-. A fulcrum block comprising fixed fulcrum portions at opposite sides, thereof comprising fulcrum means adapted for pivotal connection to associated brake levers, and coaxial pivot means fixed to opposite ends of said block and adapted to accommodate a pivotal mounting therefor on an associated support structure, the axis of said pivot means being approximately perpendicular to the axes of respective fulcrum means.

5. A fulcrum block comprising horizontal fulcrum jaws at opposite sides thereof, coaxial horizontal pivot means at opposite ends thereof, a transverse horizontal 'slot through said block extending between said jaws and adapted to house associated brakemechanism, each of said jaws comprising vertical pivotm'eans for an associated brake lever. I V

6. A pivotal fulcrum block for brake levers in asociated brake levers.

8. A brake lever fulcrum block comprising fulcrum jaws at opposite sides thereof, and coaxial pivot means at opposite ends thereof, each of said jaws comprising pivot means disposed approximately perpendicular to said coaxial pivot meanasaid secondmentioned pivot, means being adapted for pivotal connection to an associated brake lever.

,WALTERH. BASELT:

REFERENCES CITED The following references are of record in the file of this patent: r

UNITED STATES PATENTS I Date Great-Britain Feb. 7,1936

Images