US1142500A - Rotary motor. - Google Patents

Rotary motor. Download PDF

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Publication number
US1142500A
US1142500A US86762614A US1914867626A US1142500A US 1142500 A US1142500 A US 1142500A US 86762614 A US86762614 A US 86762614A US 1914867626 A US1914867626 A US 1914867626A US 1142500 A US1142500 A US 1142500A
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Prior art keywords
bushing
shaft
rear end
frame
diameter
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US86762614A
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Philip J Darlington
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/047—Nozzle boxes

Definitions

  • This invention relates to rotary motors of the type employed for driving boiler tube cleaners.
  • the object of the invention is to simplify and cheapen the construction of motors of this class and at the same time increase their efficiency and render them longer lived and more easily repaired when the wearing parts become worn.
  • the invention is applicable to water, steam and air driven motors, although it is illustrated and described herein as embodied in a water driven machine.
  • Figure 1 shows a central longitudinal section of a motor constructed according to this invention.
  • Fig. 2 is a view of the rear end of the motor.
  • Fig. 3 is atransverse section on line 33 on Fig. 1.
  • Fig. 4 is a transverse section on line 44 on Fig. '1.
  • Fig. 5 is a longitudinal section of the rear bearing bush.
  • Fig. 6 is a side view "showing parts of the front end of the frameand therotary'element or rotor.
  • Fig. 7 shows a side view of the rotor shaft and a section of a rear hearing of modified form.
  • the frame 1 of the motor shown has a cylindrical body 2 with a shaft chamber 4 which is closed at the rear end by the wall 5.
  • the .rotor shaft 6 has a journal portion 7 of large diameter near its front end and a journal portion 8 of smaller diameter at its rear end.
  • On the shaft in front of the rear journal portion is a collar 9.
  • Roller bearings 10 support the shaft at the front end and roller bearings 11 support the shaft at the rear end.
  • the front bearings are held in a bushing 12 which isforced into an enlarged part 13 of the shaft chamber at the front end of the frame, and the rear bearings are held in a bushing 14 which fits in a tapering seat 15 in the shaft chamber at the rear end.
  • the rear bushing is desirably held in place by a pin 16 which passes through a boss 17 on the frame into an opening 18 in the bushing.
  • This pin can be tapered as shown so as to insure a tight joint, and its outer end 19 maybe threaded to receive a tool by means of which it'can be removed.
  • a split collar 20 may be placedaroun'd the shaft in front of the collar 9 and fastened in the rear bushing by means of the 'pin'23. Any forwardprcssureagainst the shaft is resisted by the thrust of the collar 9 against the collar 20, which is held from forward movement by the internal flange '21 near'thc front end of the rear bushing.
  • a washer 22 is placed in the frame so as to form a seat at the rear end of the shaft chamber.
  • the internal diameter of the flange 21 in the rear bushing is slightly larger than the diameter of the large journal portion of the shaft so that the rear hearing may be located on the rear end of the shaft by passing it back over the'front end of the shaft.
  • a sleeve 24 is desirably placed in the frame between the front and rear bearings for the purposeof spacing them and keeping them in place.
  • the bore or inside diameter of the forward bushing is slightly larger than the outside diameter of the rear bushing so that when the holding pin 16 is withdrawn the shaft bearings and rear bushing. in fact all of the contents of the frame. may be drawn out at the front end without disturbing the forward bushing.
  • an oil tube 25 may be inserted centrally into the wall 5 at the rear end of the shaft chamber. This tube communicates through a hole 26 in the washer to the rear end of the shaft chamber in such manner that oil may be inserted so as tolubricate the bearings.
  • the rear end of the oil tube is normally closed by a plug 28 which may be tapered so that it will make atight joint and may be held in place against loss by the tension of a spiral spring 29.
  • the front end of the shaft 31 is threaded as usual for the purpose of receiving the tool to be driven.
  • the wheel 33 which in the drawings is illustrated as a turbine wheel. is keyed upon the shaft near the front end. This wheel has turbine buckets formed by cutting grooves 34 of the proper shape in its periphery and by surrounding these with a band 37. Jet ports 38 are formed in the peripheral edge of the flange at the front end of the frame. These ports are closed in by a tubular shield 39 which is fitted on the front endofthe frame and which extends forwardly over the rotor element.
  • the shield 39 has inwardly projecting lugs 40 which engage the rear face of the flange 3 and hold the shield from forward movement.
  • the opening in the front end of the shield is enlarged to a shoulder 42 that is flush with the front face of the flange 3, so the band 37 will not obstruct the jet ports.
  • On a reduced portion 43 at the rear end of the shield and abutting against the shoulder 44 is the front end of a casing. 45. Fitting into the rear end of this casing is the reduced front end 47 of the cap 46, a hardened ring 49 being placedaround this cap between the shoulder 60 and the end of the casing, to form a protectionfor the rear end of'the motor when in use.
  • the cap/46 is screwed onto the hub 48 that projects backward from the rear end of the frame and which has openings 50 for the passage through the hub of the operating fluid.
  • the cap is internally threaded for the attachment of a fluid supply pipe.
  • the rear bushing 53 is shown as containing thrust balls 55 arranged between the internal flange 54 in the bushing and the collar 57 on the shaft 56.
  • This shaft also has a collar 58 arranged at the rear end of the journal portion 7 for the purpose of preventing the longitudinal displacement of the front bearings, this collar performing the function of the sleeve 24 shown in Fig. 1.
  • the collar 57 is slightly smaller in diameter than the bore of the' flange 54 so that the bushing 53 may be slipped over the end of the shaft 56 until the balls can be dropped into place. Then the bushing is pushed backwardly so as to hold the balls.
  • a rotary motor having a frame with a cylindrical chamber that is closed at the rear end and is open at the front end, a bearing bush located at the rear end of said chamber, a bearing bush located at the front end of said chamber, said latter bush having an interior diameter that is larger than the exterior diameter of the former bush, bearings arranged in said bushes, a shaft supported by said bearings and a rotary element fixed to said shaft.
  • a rotary motor having a frame with a cylindrical chamber that is closed at the rear end and is open at the front end, a rotary element, a shaft carrying said element, and
  • a rotary motor having a frame with a cylindrical chamber closed at the rear end by an integral wall and open at the front end, a rotary element, a shaft carrying said rotary element, and bushings rotatably supporting said shaftrnear its front and rear ends, the inside diameter of the front bushing beinglarger than the outside diameter of the rear bushing.
  • a rotary motor having a frame with a cylindrical chamber closed at the rear end and open at the front end, a rotary element, ashaft carrying said rotary element, a rear bushing supporting the rear end of said shaft, and a front bushing supporting the front end of said shaft, said front bushing having an interior diameter that is larger than the exterior diameter of the rear bushing, whereby the rear bushing may be with drawn from the frame through the front end without disturbing the front bushing.
  • a rotary motor having a frame with a chamber that is larger in diameter at the front end than at the rear end, a bushing fitting the larger opening at the front end, a bushing fitting the smaller opening at the rear end, the exterior diameter of the latter bushing being smaller than the interior diameter of the former bushing, bearings held in said bushings, ashaft mounted in said bearings, and a rotary element fixed to said shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

P171, DARLINGTON. ROTARY MOTOR. APPLICATION FILIED OCT. 20, I914.
Patented June 8, 1915.
2 SHEETS-SHEET 1.
\W MU Q h W //////////////////////Z \MW 1w W WW WW WW Qh W\ O R Q gzenkaa e 'Miiiesses P. 1. DARLINGTON.
' ROTARY MOTOR.
APPLICATION FILED OCT. 20. 1914.
1,142,500. Patented June 8,1915.
2 SHEETS-SHEET 2.
PHILIPVJ'. DARLINGTON, F HARTFORD, CONNECTICUT.
y Romany oron.
l Specification of LettersPatent. Patented June 8 1915 Application filed October 20, 1914. Serial No. 867,626.
To all whom it may concern Be it known that'I. PHILIP J; DARLING- TON, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented new and useful Improvements in Rotary Motors, of which the following is a specification.
This invention relates to rotary motors of the type employed for driving boiler tube cleaners.
The object of the invention 'is to simplify and cheapen the construction of motors of this class and at the same time increase their efficiency and render them longer lived and more easily repaired when the wearing parts become worn.
The invention is applicable to water, steam and air driven motors, although it is illustrated and described herein as embodied in a water driven machine.
In the accompanying drawings Figure 1 shows a central longitudinal section of a motor constructed according to this invention. Fig. 2 is a view of the rear end of the motor. Fig. 3 is atransverse section on line 33 on Fig. 1. Fig. 4 is a transverse section on line 44 on Fig. '1. Fig. 5 is a longitudinal section of the rear bearing bush. Fig. 6 is a side view "showing parts of the front end of the frameand therotary'element or rotor. Fig. 7 shows a side view of the rotor shaft and a section of a rear hearing of modified form. l
The frame 1 of the motor shown has a cylindrical body 2 with a shaft chamber 4 which is closed at the rear end by the wall 5. Around the open or front end of the body is an external flange 3. The .rotor shaft 6 has a journal portion 7 of large diameter near its front end and a journal portion 8 of smaller diameter at its rear end. On the shaft in front of the rear journal portion is a collar 9. Roller bearings 10 support the shaft at the front end and roller bearings 11 support the shaft at the rear end. The front bearings are held in a bushing 12 which isforced into an enlarged part 13 of the shaft chamber at the front end of the frame, and the rear bearings are held in a bushing 14 which fits in a tapering seat 15 in the shaft chamber at the rear end.
The rear bushing is desirably held in place by a pin 16 which passes through a boss 17 on the frame into an opening 18 in the bushing. This pin can be tapered as shown so as to insure a tight joint, and its outer end 19 maybe threaded to receive a tool by means of which it'can be removed. A split collar 20 may be placedaroun'd the shaft in front of the collar 9 and fastened in the rear bushing by means of the 'pin'23. Any forwardprcssureagainst the shaft is resisted by the thrust of the collar 9 against the collar 20, which is held from forward movement by the internal flange '21 near'thc front end of the rear bushing. A washer 22 is placed in the frame so as to form a seat at the rear end of the shaft chamber. The internal diameter of the flange 21 in the rear bushing is slightly larger than the diameter of the large journal portion of the shaft so that the rear hearing may be located on the rear end of the shaft by passing it back over the'front end of the shaft.' A sleeve 24 is desirably placed in the frame between the front and rear bearings for the purposeof spacing them and keeping them in place. The bore or inside diameter of the forward bushing is slightly larger than the outside diameter of the rear bushing so that when the holding pin 16 is withdrawn the shaft bearings and rear bushing. in fact all of the contents of the frame. may be drawn out at the front end without disturbing the forward bushing.
The end of an oil tube 25 may be inserted centrally into the wall 5 at the rear end of the shaft chamber. This tube communicates through a hole 26 in the washer to the rear end of the shaft chamber in such manner that oil may be inserted so as tolubricate the bearings. The rear end of the oil tube is normally closed by a plug 28 which may be tapered so that it will make atight joint and may be held in place against loss by the tension of a spiral spring 29.
The front end of the shaft 31 is threaded as usual for the purpose of receiving the tool to be driven. The wheel 33, which in the drawings is illustrated as a turbine wheel. is keyed upon the shaft near the front end. This wheel has turbine buckets formed by cutting grooves 34 of the proper shape in its periphery and by surrounding these with a band 37. Jet ports 38 are formed in the peripheral edge of the flange at the front end of the frame. These ports are closed in by a tubular shield 39 which is fitted on the front endofthe frame and which extends forwardly over the rotor element. The shield 39 has inwardly projecting lugs 40 which engage the rear face of the flange 3 and hold the shield from forward movement. The opening in the front end of the shield is enlarged to a shoulder 42 that is flush with the front face of the flange 3, so the band 37 will not obstruct the jet ports. On a reduced portion 43 at the rear end of the shield and abutting against the shoulder 44 is the front end of a casing. 45. Fitting into the rear end of this casing is the reduced front end 47 of the cap 46, a hardened ring 49 being placedaround this cap between the shoulder 60 and the end of the casing, to form a protectionfor the rear end of'the motor when in use. The cap/46 is screwed onto the hub 48 that projects backward from the rear end of the frame and which has openings 50 for the passage through the hub of the operating fluid. The cap is internally threaded for the attachment of a fluid supply pipe. In the modification illustrated in Fig. 7 the rear bushing 53 is shown as containing thrust balls 55 arranged between the internal flange 54 in the bushing and the collar 57 on the shaft 56. This shaft also has a collar 58 arranged at the rear end of the journal portion 7 for the purpose of preventing the longitudinal displacement of the front bearings, this collar performing the function of the sleeve 24 shown in Fig. 1. The collar 57 is slightly smaller in diameter than the bore of the' flange 54 so that the bushing 53 may be slipped over the end of the shaft 56 until the balls can be dropped into place. Then the bushing is pushed backwardly so as to hold the balls.
The invention claimed is 1. A rotary motor having a frame with a cylindrical chamber that is closed at the rear end and is open at the front end, a bearing bush located at the rear end of said chamber, a bearing bush located at the front end of said chamber, said latter bush having an interior diameter that is larger than the exterior diameter of the former bush, bearings arranged in said bushes, a shaft supported by said bearings and a rotary element fixed to said shaft.
2. A rotary motor having a frame with a cylindrical chamber that is closed at the rear end and is open at the front end, a rotary element, a shaft carrying said element, and
bushings in the chamber in the frame supporting said shaft near its front and rear ends, the inside diameter of the front bushing being larger than the outside diameter of the rear bushing.
3. A rotary motor having a frame with a cylindrical chamber closed at the rear end by an integral wall and open at the front end, a rotary element, a shaft carrying said rotary element, and bushings rotatably supporting said shaftrnear its front and rear ends, the inside diameter of the front bushing beinglarger than the outside diameter of the rear bushing.
4. A rotary motor having a frame with a cylindrical chamber closed at the rear end and open at the front end, a rotary element, ashaft carrying said rotary element, a rear bushing supporting the rear end of said shaft, and a front bushing supporting the front end of said shaft, said front bushing having an interior diameter that is larger than the exterior diameter of the rear bushing, whereby the rear bushing may be with drawn from the frame through the front end without disturbing the front bushing.
5. A rotary motor having a frame with a chamber that is larger in diameter at the front end than at the rear end, a bushing fitting the larger opening at the front end, a bushing fitting the smaller opening at the rear end, the exterior diameter of the latter bushing being smaller than the interior diameter of the former bushing, bearings held in said bushings, ashaft mounted in said bearings, and a rotary element fixed to said shaft.
In testimonywhereof I have signed my name to this specification in the presence of two subscribing witnesses this 15th day of October, 1914.
PHILIP J. DARLINGTON.
US86762614A 1914-10-20 1914-10-20 Rotary motor. Expired - Lifetime US1142500A (en)

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