US1109097A - Concrete-mixing machine. - Google Patents

Description

J. L. WETTLAUPER.

CONCRETE MIXING MACHINE.

APPLIGATION. FILED MAR. 3, 1911.

1,109,097. ed Sept, 1, 1914 THE JURRIS PETERS COUPHO1U LITHDH WASHINGTON. 0. C.

{UNITED STATESTATENT! .coivcenrn-lvrixme MAcH Nnj 2. Application filed march3,1911.-'SerialNiilGlZJlQl To all whom it may concern away to exhibitthe construction.

Be it known that I, JOHN Lnwis WE'rT- LAUFER, of the city of Toronto, iii the county of York, in the Province of Ontario, Canada, have invented certain new and"usefuljIImrovements in Concrete-Mixing Machines;

of which the following is the specification.

My invention relates to improvements in concrete mixing machines and the object of the invention is to so arrange for the dumping of the machine that it may be controlled from the back of the machine, where the material is received and thus dispense with an extra man usually employed at the front to regulate the dumping of the drum.

My invention consists of an eccentric secured to the main shaft and a strap encircling the same and provided with a connecting rod, and a lever havingxa pivotal joint connection to the rod, and a toggle joint connection to the drum frame, a clutch on the shaft and a suitable leverforthrowing the clutch in and out as hereinafter more particularly explained.

- Figure 1, is an end elevation of my con crete mixing machine shewing the parts involved in my invention. Fig. 2, is a sectional plan with the drum partially broken In the drawings like letters of reference indicate corresponding parts in each figure.

A is the main frame, which is supported on any suitable truck. T

A is the drum. 7

B are standard brackets and C is a tiltable drum frame, which depends from a trunnion shaft C extending through the top ofthe standard brackets B. The trunnion shaft G about which the drum frame tilts is between the drum and its frame, and is so positioned as to bringthe center of gravity of the drum and its frame as near the axis of tilt as possible'when the drum is loaded:

0 is a stud shaft journaled in bearing brackets G on the drum frame. y

C is a bevel gear mounted on the stud shaft G". e I

C is a bevel gear mounted on the trunnion shaft and meshing with the gear C C is a gear ring on the drum A. D is the main driving shaft. A spur gear is provided on this shaft D which meshes with a spur gear on the trunnion shaft G from whence motion is imparted to the rotating means for the drum through the bevel the "stud shaft Y O, and so 011 to the. drum,

preferred,"I' may make the spur gear on the trunnion shaft and the bevel gear 0 of one piece. I E-i's a normally inoperative is ual connecting rod E? having a forked end F is a lever fulcrumed on thecross bar A" and connected by a pin F to the forked end of the connecting rod E v F is a link- 'pivotally connected to the frame 0 at'its downwardly moving side and to the lever]? and forming a toggle joint with the lever.

G is a clutch of any suitable, type'for con necting and disconnecting the'eccentric E from the power shaft D and H is-an operating lever, which is provided with pins H, which extend in the usual grooved collar of the clutch. By manipulating the lever H the clutch operates to throw the eccentric with its frame tilting means into and out of operation.

j-It will be seen thatthe lever H extends to the rear or feeding end of the drum and gear'Ct onfthe' trunnion shafflthe gear eccentric located thereon and E is the strap p of the eccentric, which is provided with the consequently is in control of the man, who is usually employed at this side of the machine. This man may by throwing the clutch in provide for the ready dumping of the drum as the eccentric will be then thrown 1n mot on and will impart the necessary pull through the lever 'F and toggle jointed link F to the discharge end of the frame, thus throwing it down and the drum likewise, so as to discharge the contents of the drum. The lever may be thrown in permanently and in this case the drum will be tilted periodically, this depending upon the speed at which the shaft rotates, which may be, of course, predetermined according to the ra-. pidity with which it is found that-the drum may be filled with material. By having the pivotalaxis between the drum and its frame it is possible to have the centerof gravity of the drum-and its frame," when loaded, fallvery nearly within this axis,;which means that the drum and its apparatus is so nicely balanced on its pivotal: axis that even thoughit' may contain a considerable weight offc'oncrete material, it will take only aminimum of power to cause it to dump. This easy tilting feature, togtthei l with the control of: the dumping of the me chine at the feeding end carries out. the object of my invention of securing a one-man main frame, a trunnion shaft, supports therefor on said frame, a tiltable drum frame depending from said trunnion shaft 7 a drum on said drum frame havingv opposite feed and discharge openings, the piv-Y otal axis of said drum frame being between saiddrum frame and'thedrum thereon, the 1 center of gravity of said drumand-its frame,

said axis, rotating means for said drum, a power'shaft, means coaxial with sald trunnion shaft for transmitting power from said power shaft to said rotating means, normally inoperative tilting means for the drum "frame, means for operatively connecting said rotatingmeans and sald tilting means.

JOHN LEWVIS WETTLAUFER.

Witnesses:

v, H. PRESTON,

B. Born.

Copies of this patent may be obtained for; jiire ce it b'fa'ddrssing the: a Commission er of Patents, I Washington, D. C.-

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