US2469116A - Propeller mounting - Google Patents

Propeller mounting Download PDF

Info

Publication number
US2469116A
US2469116A US638544A US63854445A US2469116A US 2469116 A US2469116 A US 2469116A US 638544 A US638544 A US 638544A US 63854445 A US63854445 A US 63854445A US 2469116 A US2469116 A US 2469116A
Authority
US
United States
Prior art keywords
shaft
hub
propeller
insert
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US638544A
Inventor
Elmer C Kiekhaefer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US638544A priority Critical patent/US2469116A/en
Application granted granted Critical
Publication of US2469116A publication Critical patent/US2469116A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/02—Mounting of propulsion units
    • B63H20/06—Mounting of propulsion units on an intermediate support

Definitions

  • This invention relates to a propeller mounting for outboard motors and thelike.
  • the principal object of the invention is tc provide a simple and less costly cushioned mounting ior a propeller.
  • Another object is to provide a shear pin construction for a cushioned mounting and in which the shear pins are held in place by the mounting.
  • Another object is to provide a mounting that nts directly upon the end of a plain shaft without requiring additional sleeves or the like.
  • Figure l is a side elevation of a lower housing and the propeller with parts of the housing broken away and sectioned;
  • Fig. 2 is a rear elevation of the propeller with the blade tips broken away;
  • Fig. 3 is a front elevation of the propeller with the blade tips broken away;
  • Fig. 4 is an axial section of the propeller with the blades broken away;
  • Fig. 5 is an axial section of the assembled propeller mounting
  • Fig. 6 is a transverse section taken on line 6-6 of Fig. 5.
  • the propeller comprises a plurality of blades I- cast integrally with a hollow circular hub 2.
  • the hub 2 has a maximum diameter at its forward end, corresponding to that of the propeller shaft housing 3 of the outboard motor, and curves inwardly toward its rear end to a minimum diameter approaching a point to give a stream lined effect as the outboard motor moves through the water.
  • the drive shaft 4 is supported horizontally in suitable bearings 5 in housing 3, and has its rear end extending axially into hub 2. y
  • a cushion member 6 of rubber or other suitable resilient material is inserted between the hub 2 and shaft 4 to transmit the driving force between the shaft and propeller.
  • the hub 2 is of substantially larger diameter than shaft 4 and the insert 6 fills the hub.
  • the insert 6 is rotationally interlocked with hub 2 by means of a plurality of longitudinal ribs E the insert tc hold the same in place.
  • a snap ring sets into a circumferential groove I0 in the hub 2 and overlaps the plate 8 sufficiently to hold the latter in place.
  • the propeller assembly with the insert 6 in hub 2 is pushed onto the rear end of shaft 4 and is secured in piace by a pair of shear pins l which are driven through holes i2 in the hub, and extend through corresponding holes in shaft Il. rlhe shear pins ll are substantially shorter than the diameter of hub 2 so that the ends of the pins, after they are driven into place, are spaced radially inward from the hub to provide for the closing in of the rubber of insert about the ends of the pins for retaining the pins in place.
  • the holes in insert 6 for receiving the shear pins H are of small diameter so that the pins enlarge the holes and fit tightly therein.
  • the closing of the rubber about the ends of the pins prevents iilling of the holes with corrosion products and protects the pins in service.
  • a punch is employed to drive the shear pins through and out of thehub assembly, after which the assembly can be readily pulled from the shaft.
  • the shear pins Il serve to transmit rotary forces and also axial forces between the shaft 4 and insert 6.
  • the pins may be designed to shear oi in case of emergency.
  • small metal inserts I3 may be molded in the rubber to receive the pins Il adjacent the shaft. 'I'he inserts I3 provide greater bearing surface between the pins H and the rubber member 6.
  • the axial opening in cushion member 6 for receiving shaft 4 is preferablyl longer than the shaft to provide an air pocket I4 at the end of the shaft into which the rubber may move during ⁇ iiexing in service.
  • An internally threaded hole l5 may be provided axially through the rear end of hub 2 for the insertion of a puller to remove the assembly from the shaft.
  • a smaller threaded hole I6 may be provided axially in the rear end of shaft 4 for the insertion of a member for forcing the propeller assembly onto the shaft.
  • rubber as employed in the claims is intended to include synthetic and natural rubber and various plastics and the like having the required characteristics for the purpose and constituting equivalents to rubber in service.
  • a drive shaft a propeller having a hub, a resilient insert between the hub and shaft to transmit driving forces therebetween andhaving a radial hole therein opening outwardly from said shaft, means to secure said insert in the propeller hub, and a transverse pin passing through said shaft and into lthe radial hole in said insert for securing the insert against axial displacement in either direction on said shaft.
  • a drive shaft a propeller having a hub, a. resilient rubber insert between the hub and shaft to transmit driving forces therebetween andA having a radial hole therein opening outwardly from said shaft, means to secure said insert in the propeller hub, and at least one transverse shear pin passing through said shaft and into'the radial' hole in said Ainsert to secure the latter upon the shaft against axial displacement in either direction.
  • a resilient rubber insert between the hub and' shaft to transmit .driving-forces therebetween, means to secure said insert in the propeller hub, and at least one transverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, saidvhub having holes therein aligned with said pin providing for insertion and removalof the pin.
  • a drive shaft a propeller having a hub, a resilient rubber insert between the hub and shaft to transmit driving forces therebetween, means to secure said insert in the propeller hub, and at least one transverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, said hub having holes therein aligned with said pin providing for insertion and removal of the pin and said insert having small holes for receiving said pin and adapted to substantially close upon the ends of the pin to retain the pin in place.
  • a drive shaft a propeller having a hub, a resilient rubber insertl between .the hub and shaft to transmit driving forces therebetween, means to secure said insert in the propeller hub, at least one transverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, said hub having holes therein aligned with said pin providing for insertion and removal of the pin and said insert having small holes for receiving said pin and adapted to substantially close upon the ends of the pin to retain the pin in. place, and metal inserts at the inner ends of the holes in said rubber member for receiving said shear pin and providing additional ⁇ bearing surface between it and the rubber.
  • a drive shaft a propeller having a hub, a resilient rubber insert between the hub and shaft to transmit driving forces therebetween, means to secure said insert-in the propeller hub, at least onetransverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, said hub having holes therein aligned with said pin providing :for insertion and removal of the pin, and metal inserts disposed in said rubber member for receiving said shear pin and providing additional bearing surface between it and the rubber.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Motor Power Transmission Devices (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Description

2 Sheetsqsheet fr@ yam/0f er C @mme/? l am? E. C. KHEKHAEFER PROPELLER MOUNTING Filed Dec,
3, 11949. E. cjKaEKHAEFr-:R l 2,469,116
' PROPELLER MOUNTING l Filed Dec. 31,.1945 K 2 Sheets-Sheet 2 ,iz/farne? Patented May 3, 1949 UNITED STATES PATENT OFFICE PROPELLER MOUNTING Elmer C. iiiekhaefer, Cedarburg, Wis.
Application December 3l., 1945, Serial No. 638,544
6 Ulaims. t
This invention relates to a propeller mounting for outboard motors and thelike.
The principal object of the invention is tc provide a simple and less costly cushioned mounting ior a propeller.
another object is to provide a shear pin construction for a cushioned mounting and in which the shear pins are held in place by the mounting.
Another object is to provide a mounting that nts directly upon the end of a plain shaft without requiring additional sleeves or the like.
Other objects and advantages appear hereinafter in the description of an embodiment of the invention illustrated in the accompanying drawings.
In the drawings:
Figure l is a side elevation of a lower housing and the propeller with parts of the housing broken away and sectioned;
Fig. 2 is a rear elevation of the propeller with the blade tips broken away;
Fig. 3 is a front elevation of the propeller with the blade tips broken away;
Fig. 4 is an axial section of the propeller with the blades broken away;
Fig. 5 is an axial section of the assembled propeller mounting; and
Fig. 6 is a transverse section taken on line 6-6 of Fig. 5.
The propeller comprises a plurality of blades I- cast integrally with a hollow circular hub 2.
The hub 2 has a maximum diameter at its forward end, corresponding to that of the propeller shaft housing 3 of the outboard motor, and curves inwardly toward its rear end to a minimum diameter approaching a point to give a stream lined effect as the outboard motor moves through the water.
The drive shaft 4 is supported horizontally in suitable bearings 5 in housing 3, and has its rear end extending axially into hub 2. y
A cushion member 6 of rubber or other suitable resilient material is inserted between the hub 2 and shaft 4 to transmit the driving force between the shaft and propeller. For this purpose the hub 2 is of substantially larger diameter than shaft 4 and the insert 6 fills the hub.
The insert 6 is rotationally interlocked with hub 2 by means of a plurality of longitudinal ribs E the insert tc hold the same in place. A snap ring sets into a circumferential groove I0 in the hub 2 and overlaps the plate 8 sufficiently to hold the latter in place.
The propeller assembly with the insert 6 in hub 2 is pushed onto the rear end of shaft 4 and is secured in piace by a pair of shear pins l which are driven through holes i2 in the hub, and extend through corresponding holes in shaft Il. rlhe shear pins ll are substantially shorter than the diameter of hub 2 so that the ends of the pins, after they are driven into place, are spaced radially inward from the hub to provide for the closing in of the rubber of insert about the ends of the pins for retaining the pins in place.
The holes in insert 6 for receiving the shear pins H are of small diameter so that the pins enlarge the holes and fit tightly therein. The closing of the rubber about the ends of the pins prevents iilling of the holes with corrosion products and protects the pins in service.
When it is desired to remove the propeller from shaft 4 a punch is employed to drive the shear pins through and out of thehub assembly, after which the assembly can be readily pulled from the shaft.
The shear pins Il serve to transmit rotary forces and also axial forces between the shaft 4 and insert 6. The pins may be designed to shear oi in case of emergency. For this purpose small metal inserts I3 may be molded in the rubber to receive the pins Il adjacent the shaft. 'I'he inserts I3 provide greater bearing surface between the pins H and the rubber member 6.
The axial opening in cushion member 6 for receiving shaft 4 is preferablyl longer than the shaft to provide an air pocket I4 at the end of the shaft into which the rubber may move during` iiexing in service.
An internally threaded hole l5 may be provided axially through the rear end of hub 2 for the insertion of a puller to remove the assembly from the shaft. A smaller threaded hole I6 may be provided axially in the rear end of shaft 4 for the insertion of a member for forcing the propeller assembly onto the shaft.
The invention may have various embodiments within the scope of the accompanying claims.
' The term rubber as employed in the claims is intended to include synthetic and natural rubber and various plastics and the like having the required characteristics for the purpose and constituting equivalents to rubber in service.
3 Iclalm:
-1. In a propeller mounting of the class de-- scribed, a drive shaft, a propeller having a hub, a resilient insert between the hub and shaft to transmit driving forces therebetween andhaving a radial hole therein opening outwardly from said shaft, means to secure said insert in the propeller hub, and a transverse pin passing through said shaft and into lthe radial hole in said insert for securing the insert against axial displacement in either direction on said shaft.
2. In a propeller mounting of the class described, a drive shaft, a propeller having a hub, a. resilient rubber insert between the hub and shaft to transmit driving forces therebetween andA having a radial hole therein opening outwardly from said shaft, means to secure said insert in the propeller hub, and at least one transverse shear pin passing through said shaft and into'the radial' hole in said Ainsert to secure the latter upon the shaft against axial displacement in either direction.
3, In a propeller mounting of the class described, a drive shaft, a propeller having a hub,
a resilient rubber insert between the hub and' shaft to transmit .driving-forces therebetween, means to secure said insert in the propeller hub, and at least one transverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, saidvhub having holes therein aligned with said pin providing for insertion and removalof the pin.
4. In a propeller mounting of the class described, a drive shaft, a propeller having a hub, a resilient rubber insert between the hub and shaft to transmit driving forces therebetween, means to secure said insert in the propeller hub, and at least one transverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, said hub having holes therein aligned with said pin providing for insertion and removal of the pin and said insert having small holes for receiving said pin and adapted to substantially close upon the ends of the pin to retain the pin in place.
5. In a propeller mounting of the class described, a drive shaft, a propeller having a hub, a resilient rubber insertl between .the hub and shaft to transmit driving forces therebetween, means to secure said insert in the propeller hub, at least one transverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, said hub having holes therein aligned with said pin providing for insertion and removal of the pin and said insert having small holes for receiving said pin and adapted to substantially close upon the ends of the pin to retain the pin in. place, and metal inserts at the inner ends of the holes in said rubber member for receiving said shear pin and providing additional` bearing surface between it and the rubber.
6. In a propeller mountingf of theclassy described, a drive shaft, a propeller havinga hub, a resilient rubber insert between the hub and shaft to transmit driving forces therebetween, means to secure said insert-in the propeller hub, at least onetransverse shear pin passing through said shaft and into said insert to secure the latter upon the shaft, said hub having holes therein aligned with said pin providing :for insertion and removal of the pin, and metal inserts disposed in said rubber member for receiving said shear pin and providing additional bearing surface between it and the rubber.
' ELMER.
REFERENCES CITED c. KIEKHAEFER.
The following references are of record in the le of this patent:
Y UNITED STATES PATENTS Number Name Date Yantis July 4, 1939
US638544A 1945-12-31 1945-12-31 Propeller mounting Expired - Lifetime US2469116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US638544A US2469116A (en) 1945-12-31 1945-12-31 Propeller mounting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US638544A US2469116A (en) 1945-12-31 1945-12-31 Propeller mounting

Publications (1)

Publication Number Publication Date
US2469116A true US2469116A (en) 1949-05-03

Family

ID=24560458

Family Applications (1)

Application Number Title Priority Date Filing Date
US638544A Expired - Lifetime US2469116A (en) 1945-12-31 1945-12-31 Propeller mounting

Country Status (1)

Country Link
US (1) US2469116A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045763A (en) * 1959-10-26 1962-07-24 Perrott William Shock absorbing positive drive means for marine propellers
US3084852A (en) * 1961-03-29 1963-04-09 Gen Electric Fan blade hub connector
US3109312A (en) * 1963-11-05 Setting arrangement for taximeters
US3477794A (en) * 1967-02-14 1969-11-11 Columbian Bronze Corp Yielding bushing
US3865510A (en) * 1972-11-29 1975-02-11 Komatsu Mfg Co Ltd Marine propeller
US4338064A (en) * 1980-03-31 1982-07-06 Fred Carmel Clutch assembly
US5943776A (en) * 1997-09-24 1999-08-31 Shop Vac Corporation Motor shaft assembly method
US6035515A (en) * 1998-10-16 2000-03-14 Shopvac Corporation Motor shaft assembly and method
US6471481B2 (en) 2001-01-02 2002-10-29 Turning Point Propellers, Inc. Hub assembly for marine propeller
US20080139061A1 (en) * 2006-11-14 2008-06-12 Liheng Chen Spindle with overmolded bushing
US20090163089A1 (en) * 2007-12-20 2009-06-25 Liheng Chen Propeller Assembly Incorporating Spindle With Fins And Overmolded Bushing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164485A (en) * 1938-10-21 1939-07-04 Gen Motors Corp Slip clutch device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164485A (en) * 1938-10-21 1939-07-04 Gen Motors Corp Slip clutch device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109312A (en) * 1963-11-05 Setting arrangement for taximeters
US3045763A (en) * 1959-10-26 1962-07-24 Perrott William Shock absorbing positive drive means for marine propellers
US3084852A (en) * 1961-03-29 1963-04-09 Gen Electric Fan blade hub connector
US3477794A (en) * 1967-02-14 1969-11-11 Columbian Bronze Corp Yielding bushing
US3865510A (en) * 1972-11-29 1975-02-11 Komatsu Mfg Co Ltd Marine propeller
US4338064A (en) * 1980-03-31 1982-07-06 Fred Carmel Clutch assembly
US6091176A (en) * 1997-09-24 2000-07-18 Shop Vac Corporation Motor shaft assembly
US5943776A (en) * 1997-09-24 1999-08-31 Shop Vac Corporation Motor shaft assembly method
US6035515A (en) * 1998-10-16 2000-03-14 Shopvac Corporation Motor shaft assembly and method
US20030188414A1 (en) * 1998-10-16 2003-10-09 Mark E. Baer Motor shaft assembly and method
US7241117B2 (en) 1998-10-16 2007-07-10 Shop Vac Corporation Motor shaft assembly and method
US6471481B2 (en) 2001-01-02 2002-10-29 Turning Point Propellers, Inc. Hub assembly for marine propeller
US6685432B2 (en) 2001-01-02 2004-02-03 Turning Point Propellers Inc. Hub assembly for marine propeller
US20080139061A1 (en) * 2006-11-14 2008-06-12 Liheng Chen Spindle with overmolded bushing
US7717678B2 (en) 2006-11-14 2010-05-18 Turning Point Propellers, Inc. Spindle with overmolded bushing
US20090163089A1 (en) * 2007-12-20 2009-06-25 Liheng Chen Propeller Assembly Incorporating Spindle With Fins And Overmolded Bushing
US7708526B2 (en) 2007-12-20 2010-05-04 Turning Point Propellers, Inc. Propeller assembly incorporating spindle with fins and overmolded bushing

Similar Documents

Publication Publication Date Title
US2469116A (en) Propeller mounting
KR940000409B1 (en) Thrust bearing system for propeller shaft
US3096106A (en) Torque transmitting bearing
US3045763A (en) Shock absorbing positive drive means for marine propellers
US2993544A (en) Propeller mounting for outboard motors
US1780727A (en) Rubber coupler
EP3245126B1 (en) Swimming and diving aid
US2343839A (en) Flexible coupling
US2974502A (en) Resilient mounting of fan on shaft
US2560644A (en) Flexible shaft coupling
US4338064A (en) Clutch assembly
US3113625A (en) Marine propeller and its mounting on a propeller shaft
US3061341A (en) Propeller hub arrangement for aircraft
US4436514A (en) Exhaust means for marine propulsion unit
SE444409B (en) hub barrel
US1957062A (en) Bearing mounting
US6659818B2 (en) Shock-absorbing propeller assembly
US2781165A (en) Motor driven fan and method of assembling the components thereof
US2560958A (en) Resilient drive coupling
US2417436A (en) Flexible drive coupling
US20210159755A1 (en) Electric machine rotor
US4278027A (en) Resilient railway truck double axle drive
US1798787A (en) Pump
US1407568A (en) Victor w
US2348274A (en) Shaft journaling means