US1162411A

US1162411A - Centrifugally-operated brake.

Info

Publication number: US1162411A
Application number: US52075609A
Authority: US
Inventors: William Speer; Arthur Louis Speer
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-10-02
Filing date: 1909-10-02
Publication date: 1915-11-30
Anticipated expiration: 1932-11-30

Description

W. & A. L. SPEER.

CENTRIFUGALLY OPERATED BRAKE.

APPLICATION FILED 0CT.Z. 1909. 1 1 62,41 1 Patented Nov. 30, 1915.

2 SHEETSSHEET 2.

H 4 17 o G I 17 W I l8 WITNESSES I wmw //VVEN 702 7715/11 HTTORNEJ/ I gear 55.

one direction, to prevent sudden shocksor jars in operation; second, to provide an improved means of controlling; a lowering mechanism, and third, the providing of a hoisting and lowering mechanism, with suitable operating mechanism and control.

We attain these objects bythe mechanism illustrated in the accompanying drawings in which Figure 1 is a front view of the entire ap-fpliance installed; Fig. 2 is a view taken at right angles to that shown in Fig. 1; Fig. 3 is an enlarged view partly in section of the automatic dumb waiter; Fig. 1 is an enlarged view of the dumb waiter head shown in Fig. 1 and having the hub of the driving pulley exposed in order to show the releasing mechanism; Fig. 5 is a face view showing the governor weights in place; Fig. 6 is an enlarged view of the governor plate; Fig. 7 is a view of the governor plate taken at right angles to that shown in Fig. 6; and

Fig. 8 is an enlarged View of the governor weights.

Similar numerals refer to similarthroughout the several views.

1 is the casing.

2 is the main driving shaft.

3 is the main' gear keyed to the main shaft 2.

4 is the first intermediate gear meshing with the main gear and keyed to intermediate shaft 2 1.

5 is the second intermediate gear keyed to intermediate shaft 24 and meshes with and drives governor gear 6. Governor gear 6 runs loose on main shaft 2 is integral with sleeve 20 and drives or is retarded by. brake parts 7 is the brake gear running idle on brake shaft 8 and meshing with governor gear 6.

Specification of Letters Patent. I Application filed catcher 2, 190a.

sra'rss P T NT mos.

f WILLIAM srnsa eivn ARTH R Lows s rens, or BALTIMORE, MARYLAND.

Patented Nov. 30, 1915.

Serial 170.520,?56.

8v is the brake shaft operating through casing 1 with a longitudinal but not a rotary movement one end of which is formed into a head 9 which head 9 upon the longitudinal movement of brake shaft 8 clamps brake gear 7 between said head 9 and casing 1 thus braking the same.

10 is an inclined collar secured by means of pin 11 or otherwise secured to brake shaft 8.

12 is the brake incline operating free on brake shaft 8 and against incline collar 10. To brake incline 12 is securedbrake lever 13 at the end of which is eye 1% to which is attached the brake rope'32, e

16 is the hoisting pulley secured to main driving shaft 2 and over which operates hoisting cable .30.

17 is a leather disk secured to governor plate18. 1

18 is the governor plate having integral therewith inclines l9.

20 is a sleeve secured to governor gear 6 flat on one side and which operates loose on main shaft 2 and over which operates gov ernor plate 18 and to which it is rotatively secured. I

21 are studs secured into sleeve 20 and upon which operates governor weights 23.

22 are springs tending to keep governor weights 23 closed or in normal position.

23 are governor weights which operate on studs 21 and inclines 19 thus braking main driving gear 3 and governor gear 6.

24 is the intermediate shaft upon which are secured intermediate gears 4t and 5.

25 is the driving pulley automatically secured to intermediate shaft 24: and over which operates hand rope 31.

27 are graduated rollers. 28 is a tapered recess formed in driving pulley 25 and in which work graduated rollers 27.

26 is a collar keyed to intermediate shaft 29 is a spring tending to keep graduated rollers 27 engaged.

30 is the hoisting cable.

31 is the hand rope.

32 is the brake rope.

33 is the car.

The operation of our invention is as fol lows-Having installed the dumb waiter in the usual manner, we use the hand rope to hoist the car. When the car is at the proper landing the brake is applied by hand and in stopping the dumb waiter, shock which.

might be caused by the suddenstopping of a long rope and pulleys runnmg at high speed is prevented by means of the automatic attachment of driving pulley 25 to intermediate shaft 2 L 7 Having thus described our invention what we claim and desire to secure by Letters Patent isv V 1; The combination with a pulley, of a rotatable and longitudinally movable brake for controlling the movement of said pulley, means actuated by the speed of movement of said pulley for automatically throwing said brake into operation, a gearing mechanism operating said pulley, a power mechanism applied to said gearing mechanism, automatic means of attaching said power mechanism to said gearing mechanism whereby the power mechanismhas a loose movement in one direction of operation from the gearing mechanism.

'2. The combination with a pulley, of a brake for controlling the movement of said pulley, means actuated by the speed of movement of said pulley for automatically throwing said brake into operation, a gearing mechanism operating said pulley, a power mechanism applied to said gearing mechanism, automatic means of attaching said power mechanism to said gearing mechanism whereby the power mechanism has a loose movement in one direction of operation from the gearing mechanism.

3. In a dumb waiter, a driving shaft, a

driven shaft, positively operative mechanism connecting said two shafts, a governor brake operating to control the speed of one of said parts consisting of, a pair of rotating parts provided with means of automatically braking said parts upon the increase of speed of one of said parts, the said two parts being positively geared to operate at different speeds.

&. In a dumb waiter, a driving shaft, a driven shaft, positively operative mechanism connecting said two shafts, a governor brake operating to control the speed of one of said parts oonsistingof, a pair of rotating parts provided with means of automatically bra-king said parts upon the increase of speed of one of said parts, the said two parts being positively geared to operate at different speeds and positively operative mechanism between said brake and the one of said shafts.

WILLIAM SPEER.

ARTHUR LOUIS SPEER.

YVitnesses ROBERT WILDE, Anonin C. FLEAGLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.