US216568A - Improvement in dumb-waiters - Google Patents

Improvement in dumb-waiters Download PDF

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US216568A
US216568A US216568DA US216568A US 216568 A US216568 A US 216568A US 216568D A US216568D A US 216568DA US 216568 A US216568 A US 216568A
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dumb
pulley
waiters
pulleys
improvement
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/0415—Driving gear ; Details thereof, e.g. seals actuated manually, e.g. additional safety system

Definitions

  • Nv PETERS PHoru LITHOGRAPMEK
  • WASHXNGTON D Cv UNITED STATES PATENT OFFICE.
  • the counterweight usually employed in connection with dumb-waiters is dispensed with.
  • the counterbalancing of the platform and load is accomplished by a system of differential pulleys.
  • Figure l is a front elevation of my improvement.
  • Fig. 2 is a side elevation of the same.
  • Fig. 3 is afront elevation of. the mode of adjusting the rope by means of a pawl and rack.
  • Fig. 4 is afront elevation of the mode of adjustment by means of a weight.
  • a and A are differential pulleys of the same sizes, one being permanent, and the other adjustable by means of a screw and nut, the shank sliding in a square socket, thus permitting the length of the rope to be adjusted at pleasure.
  • this adjustment is marked G, and shown as part of differential pulley A.
  • b b b b are simply guide-pulleys for the rope E.
  • 00 are also pulleys for the rope I E, and are permanently attached to the platform D.
  • the rope E is an endless one, and runs around the pulleys as follows, viz: Oommencin g at a point, F, the ropeE runs over the guide-pulley b from the right; over the smaller part of the difierential pulley A, also from the right; around the guide-pulley c from the left, and then over the larger part of the differential pulley A from the right; then over the guidepulleys b and b from the right, and over the larger part of the differential pulley A from the left; around the guide-pulley c from the right; then over the smaller part of the differential pulley A from the left, and then over the guide-pulley b from the left to F, the point of beginning.
  • G is the lower portion of the adjustable differential pulley A, which can be either in the shape of a screw and nut, as Gin Fig. 1, arack and pawl, as H in Fig. 3, or a weight, as I in Fig. 4, neither of which modes I claim as my invent-ion.
  • the system of difl'erential pulleys one of them being adjustable, in combination with the platform of a dumb-waiter connected with said pulleys by an endless rope or chain, substantially as shown and described.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Description

W. F. HOLSKE. Dumb-Waiter.
Patented June I7, 1879.
Nv PETERS, PHoru LITHOGRAPMEK, WASHXNGTON, D Cv UNITED STATES PATENT OFFICE.
WILLIAM F. HOLSKE, OF BROOKLYN, ASSIGNOR TO B. CLARENCE DORSE'IT, OF NEW YORK, N. Y.
IMPROVEMENTIN DUMB-WAIT ERS.
Specification forming part of Letters Patent No. 216,568, dated June 17, 1879 application filed January 15, 1879.
To all whom it may concern:
Be it known that I, WILLIAM F. HOLSKE, of the city of Brooklyn. county of Kings, and State of New York, have invented a new and useful Improvement in Dumb -Waiters, of which the following is a specification.
By this invention the counterweight usually employed in connection with dumb-waiters is dispensed with. The counterbalancing of the platform and load is accomplished by a system of differential pulleys.
Referring to the drawings, Figure l is a front elevation of my improvement. Fig. 2 is a side elevation of the same. Fig. 3 is afront elevation of. the mode of adjusting the rope by means of a pawl and rack. Fig. 4 is afront elevation of the mode of adjustment by means of a weight.
Similar letters in the various figures refer to the same parts.
A and A are differential pulleys of the same sizes, one being permanent, and the other adjustable by means of a screw and nut, the shank sliding in a square socket, thus permitting the length of the rope to be adjusted at pleasure. In the drawings this adjustment is marked G, and shown as part of differential pulley A. b b b b are simply guide-pulleys for the rope E. 00 are also pulleys for the rope I E, and are permanently attached to the platform D. The rope E is an endless one, and runs around the pulleys as follows, viz: Oommencin g at a point, F, the ropeE runs over the guide-pulley b from the right; over the smaller part of the difierential pulley A, also from the right; around the guide-pulley c from the left, and then over the larger part of the differential pulley A from the right; then over the guidepulleys b and b from the right, and over the larger part of the differential pulley A from the left; around the guide-pulley c from the right; then over the smaller part of the differential pulley A from the left, and then over the guide-pulley b from the left to F, the point of beginning. G is the lower portion of the adjustable differential pulley A, which can be either in the shape of a screw and nut, as Gin Fig. 1, arack and pawl, as H in Fig. 3, or a weight, as I in Fig. 4, neither of which modes I claim as my invent-ion.
I do not confine myself in the application of the system of (liiferential pulleys to dumbwaiters to the exact arrangement shown in the accompanying drawings.
What I claim as my invention, and desire to secure by Letters Patent, is-
The system of difl'erential pulleys, one of them being adjustable, in combination with the platform of a dumb-waiter connected with said pulleys by an endless rope or chain, substantially as shown and described.
WM. F. HOLSKE.
Witnesses GEORGE HOFFMAN, FREDERIC M. DEAN.
US216568D Improvement in dumb-waiters Expired - Lifetime US216568A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835345A (en) * 1954-09-14 1958-05-20 Montgomery Elevator Elevator
US4671013A (en) * 1985-10-22 1987-06-09 Noran Cab window assembly
WO2004041701A1 (en) * 2002-11-04 2004-05-21 Kone Corporation Traction sheave elevator without counterweight
WO2004041700A1 (en) * 2002-11-04 2004-05-21 Kone Corporation Tractor sheave elevator without counterweight
US20050236232A1 (en) * 2002-11-04 2005-10-27 Jorma Mustalahti Elevator
US20060231346A1 (en) * 2003-11-24 2006-10-19 Kone Corporation Elevator system
US20060243530A1 (en) * 2003-11-17 2006-11-02 Esko Aulanko Method for installing an elevator
US20060243531A1 (en) * 2003-11-17 2006-11-02 Osmo Bjorni Method for installing an elevator, and elevator
US20060289246A1 (en) * 2004-03-26 2006-12-28 Esko Aulanko Elevator
US20070012524A1 (en) * 2004-03-22 2007-01-18 Petteri Valjus Elevator
US20070017750A1 (en) * 2004-03-18 2007-01-25 Jorma Mustalahti Method for installing an elevator, and elevator delivery assembly
WO2012049019A1 (en) * 2010-10-13 2012-04-19 Kone Corporation System for driving an elevator without counterweight

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835345A (en) * 1954-09-14 1958-05-20 Montgomery Elevator Elevator
US4671013A (en) * 1985-10-22 1987-06-09 Noran Cab window assembly
AU2003276290B2 (en) * 2002-11-04 2009-03-26 Kone Corporation Traction sheave elevator without counterweight
WO2004041701A1 (en) * 2002-11-04 2004-05-21 Kone Corporation Traction sheave elevator without counterweight
WO2004041699A1 (en) * 2002-11-04 2004-05-21 Kone Corporation Elevator cable tensioning device
US20050217944A1 (en) * 2002-11-04 2005-10-06 Esko Aulanko Elevator cable tensioning device
US20050224301A1 (en) * 2002-11-04 2005-10-13 Esko Aulanko Elevator
US20050236232A1 (en) * 2002-11-04 2005-10-27 Jorma Mustalahti Elevator
US7802658B2 (en) * 2002-11-04 2010-09-28 Kone Corporation Elevator cable tensioning device
WO2004041700A1 (en) * 2002-11-04 2004-05-21 Kone Corporation Tractor sheave elevator without counterweight
US7484596B2 (en) * 2002-11-04 2009-02-03 Kone Corporation Elevator
US8118138B2 (en) * 2003-11-17 2012-02-21 Kone Corporation Method for installing an elevator
US20060243531A1 (en) * 2003-11-17 2006-11-02 Osmo Bjorni Method for installing an elevator, and elevator
US20060243530A1 (en) * 2003-11-17 2006-11-02 Esko Aulanko Method for installing an elevator
US8141684B2 (en) * 2003-11-17 2012-03-27 Kone Corporation Method for installing an elevator, and elevator
US8602174B2 (en) * 2003-11-24 2013-12-10 Kone Corporation Apparatus and method for installing elevator ropes
US20060231346A1 (en) * 2003-11-24 2006-10-19 Kone Corporation Elevator system
US20070017750A1 (en) * 2004-03-18 2007-01-25 Jorma Mustalahti Method for installing an elevator, and elevator delivery assembly
US7562744B2 (en) * 2004-03-18 2009-07-21 Kone Corporation Method for installing an elevator, and elevator delivery assembly
CN100575236C (en) * 2004-03-18 2009-12-30 通力股份公司 Elevator installation method, elevator and assembly module of elevator
US20070012524A1 (en) * 2004-03-22 2007-01-18 Petteri Valjus Elevator
US8235179B2 (en) * 2004-03-22 2012-08-07 Kone Corporation Elevator without a counterweight
US7650972B2 (en) * 2004-03-26 2010-01-26 Kone Corporation Elevator
US20060289246A1 (en) * 2004-03-26 2006-12-28 Esko Aulanko Elevator
WO2012049019A1 (en) * 2010-10-13 2012-04-19 Kone Corporation System for driving an elevator without counterweight

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