FORM-2
THE PATENTS ACT, 1970
COMPLETE SPECIFICATION SECTION 10
TITLE : Elevator Traction Machine
APPLICANT (S): SHARP ENGINEERS, Indian Partnership Company
552, 'A' Road, Cross Road - 12, GIDC, Kathwada, Ahmedabad -382 430, Gujarat, India. PhNo. +91-79-22901711,12,14,15. Fax. No.+91-79-22901716 Web siterwww.sharpengineers.com
The following Specification particularly describes the nature of this invention and the manner in which it is to be performed.

Invention relates to an Elevator Traction Machine .It relates particularly to an Elevator Traction Machine which requires no machine room with three direction mounting machine.
Object of invention
The objective of this invention to provide an Elevator Traction Machine suitable for mounting without the requirement of any machine room.
Another objective of the present invention is to provide three direction mounting machine which means this traction machine is suitable for right hand side , left hand side and vertical side without any changing in machine . this is main feature of this machine.
BRIEF DESCRIPTION OF DRAWINGS:
The invention will now be described with respect to the non-limiting figures in the
accompanying drawings, in which
Figl: It shows the perspective view of the Elevator Traction Machine
Fig 2: It shows arrangement of gear, worm shaft and the worm wheel in the gear housing
along with the pulley.
Description
[001]. A traction machine for an elevator means a reduction gear mechanism including a Gear housing having worm shaft, Worm wheel and Gear shaft as a main components , an electric motor means three phase AC Induction motor and a brake unit connected to input shaft means worm shaft, a traction sheave connected to output shaft means Gear Shaft which transmit rotating motion to longitudinal motion by means of rope.
[002] In invention said Gear Housing (8) means housing which support worm shaft (10), worm wheel (23), gear shaft (24) and bearing which used for mounting rotating components like worm shaft and gear shaft. Gear housing made by Grey cast Iron , a Oil seal secured at one end surface of gear housing on the side on which is positioned traction sheave which secure that inside grease is not coming outside of gear housing and another end surface of gear housing is close by main cover(9), Gear Housing contain with synthetic oil for gear so we design gear housing such that there is no possibility to come oil outside it means oil leakage, for this reason we are using Oil seals with Viton material

[003] In invention Worm shaft (10) means Input shaft as a driver shaft means electric motor directly attach to worm shaft , worm shaft is fixed on one end by means of thrust bearing (6)with the help of bearing cover(7) and pressure cover (3) for preventing axial movement of worm shaft locked by lock nut (4) and star washer(5). on middle portion of worm shaft supported by deep groove ball bearingO 1), next to support bearing rotor (12) is mounted on worm shaft and at the end portion of worm shaft brake drum (19) with key and locked outer face of brake drum by means of Lock nut (22)and star washer(21).
[004] In invention we use worm shaft's material alloy steel with case hardened and perfectly match with worm wheel particularly centre contact. Radial backlash and match lead angle.
[005] In invention we use worm wheel with phosphorus bronze and secure with all required test on material and also perfectly match with worm shaft. Worm wheel is mounted on gear shaft means output shaft.
[006] In invention Gear shaft means output shaft which is supported by spherical roller bearing(28) & (29) and on one end traction sheave (30) is mounted which transmit motion. We design we are using gear shaft with alloy steel with tempering and hardening and secure with all required test of quality. We design machine without end support means no pedestal support at the end of Gear shaft.
[007] In invention traction sheave (30)means pulley having peripheral groove on outer diameter on which rope is mounting and transmit the rotating motion into longitudinal motion for moving lift car up and down.traction sheave is locked by pulley washer(31).
[008] In invention electric motor (13) means three phase induction motor connected to gear housing flange. Electric motor we are using high efficiency motor with 'F cl-ass insulation and protection cl-ass-IP 20 and also we design electric motor for 240 start per hour with duty cycle SI.
[009] In invention Brake unit (15) means brake the speed of motor after cut the power of motor. means by default brake is applied by means of tension spring(26), when supply is on of brake solenoid it open brake shoe (18)and realease the brake drum and than after supply is on of motor this will be happen within a second. We are using electromagnetic double acting DC brake for system.
[010] In invention we use Flywheel (20) for controlling inertia of machine particularly for AC2 Drive to avoid jerk in lift car during running.
[011] In invention Machine room less means we design this machine suitable for mounting without machine room it means it is use without machine room which is main consideration for invention of this machine. Today demanded elevator companies Machine roomless Traction machine.

[012] In invention three direction mounting machine means we design this traction machine suitable for right hand side, left hand side and vertical side without any changing in machine , this is main feature of this machine.
When I have described and illustrated particular embodiment of my present invention I do not wish to limit myself to the exact form shown which is indeed to illustrate my invention rather than to limit to it.
It is to be expressly understood that the invention is susceptible to such improvements and modifications, which may be made by any person skilled in the art to suit individual job requirement and any such improvements and modifications so made in the seal here in before described and illustrated shall be considered to be falling within the ambit and scope of this invention and the appended claims.

We claim:-
1. A traction machine for an elevator comprising a reduction gear mechanism including a
Gear housing having worm shaft, Worm wheel and Gear shaft as a main components.
an electric motor,
the shaft of said motor coupled to the worm shaft,
a brake unit connected to said worm shaft,
a traction sheave coupled to the Gear Shaft which transmit rotating motion to longitudinal motion by means of a rope.
2. A traction machine as claimed in claim 1 wherein Gear Housing (8) supports worm shaft (10), worm wheel (23), gear shaft (24) and there are bearings which are used for mounting rotating components like worm shaft and gear shaft.
3. A traction machine as claimed in claim 1 wherein the electric motor (13) is a three phase AC Induction motor and connected to the flange of gear housing .
4. A traction machine as claimed in claim 1 wherein the Gear housing is made of Grey cast Iron, an Oil seal secured at one end surface of gear housing on the side on which the traction sheave is positioned which secure that grease inside the housing is not coming outside and a main cover (9) for closing the another end surface of gear housing.
5. A traction machine as claimed in claim 1 wherein the worm shaft is fixed on one end by means of thrust bearing (6) with the help of bearing cover(7) and pressure cover (3) for preventing axial movement of worm shaft and locked by a lock nut (4) and star washer(5), on middle portion of worm shaft supported by deep groove ball bearing(l 1), next to support bearing rotor (12) is mounted on worm shaft and at the end portion of worm shaft brake drum (19) with key and locked outer face of brake drum by means of Lock nut (22)and star washer(21).
6. A traction machine as claimed in claim 1 wherein the worm shaft is made of alloy steel with case hardened and perfectly match with worm wheel particularly centre contact , Radial backlash and match lead angle and the worm wheel is made of phosphorus bronze and secure with all required test on material and also perfectly match with worm shaft and the Worm wheel is mounted on gear shaft means output shaft.
7. A traction machine as claimed in claim 1 wherein Gear shaft (output shaft) is supported by spherical roller beaiing(28) & (29) and a traction sheave (30) is mounted on one end which transmit motion.

8. A traction machine as claimed in claim 1 wherein the gear shaft is made of alloy steel with tempering and hardening and secured with all required test of quality and the traction sheave (30) is a pulley having peripheral groove on outer diameter on which rope is mounted which transmit the rotating motion into longitudinal motion for moving lift car up and down and the traction sheave is locked by a pulley washe:r(31).
9. A traction machine as claimed in claim 1 wherein there is a Brake unit (15) which brake the speed of motor after the power of motor is cut, by default brake is applied by means of tension spri:n.g(26), when supply is on of brake solenoid it open brake shoe (18) and realeases the brake drum and then after supply is on of motor this will be happen within a second and a flywheel (20) attached to the motor for controlling inertia of machine particularly for AC2 Drive to avoid jerk in lift car during running.
10. A traction machine substantially described as herein with reference to the
accompanying drawing.