US1937152A - Positive valve control for internal combustion engines - Google Patents

Positive valve control for internal combustion engines Download PDF

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Publication number
US1937152A
US1937152A US58205831A US1937152A US 1937152 A US1937152 A US 1937152A US 58205831 A US58205831 A US 58205831A US 1937152 A US1937152 A US 1937152A
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Prior art keywords
valve
piston
cam
shaft
spring
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Expired - Lifetime
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Junk Walter
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Junk Walter
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/30Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/21Elements
    • Y10T74/2101Cams
    • Y10T74/2107Follower

Description

Nov. 28, 1933. w N 1,937,152

POSITIVE VALVE CONTROL FOR INTERNAL COMBUSTION ENGINES Filed Dec. 19, 1931- Patented Nov. 28, 1933 UNITED STATES VALVE CONTROL FOR INTERNAL COMBUSTION ENGINES POSITIVE Walter Jiink, Berlin, Germany Application December 19, 1931, Serial No. f

582,058 and in Germany December 23, 1930 1 Claim. (01. 74- -1) The invention relates to a positive valve control for internal combustion engines, in which the control is effected by slidable elements, yieldably mounted and gripping fork-like over the hollow cam disc.

In comparison with forms of construction providing a subdivision of the valve shaft and its yieldable connection with the cam disc, the valve control according to the invention is distinguished by the fact that all gear elements outside the valve shaft and mounted independently of this shaft are omitted and that the'removing of the valve, on which the additional elements forming a unit with the valve shaft are mounted can be carried out in the simplest manner.

The characteristic feature of the invention consists therefore chiefly in that the valve shaft, subdivided into two mutually adjustable parts, terminates in a fork, the upper part of which bears directly against the cam disc like a slidable shoe, whereas the lower part accommodates a slit piston and a transverse pin, serving as abutment for a spring which presses the piston against the inner side of the cam.

An embodiment of the invention is diagrammatically illustrated by way of example in the accompanying drawing, in which:--

Fig. 1 shows the control arrangement in longitudinal section and in the position in which the cam has just closed the valve.

Fig. 2 is a side elevation partly in section, showing the valve in closed position.

Fig. 3 shows the yieldable piston in elevation, partly in section.

Fig. 4 shows in plan View from below the bifurcated part carrying the piston.

' The valve shaft consists of an upper or outer part a and or" a lower or inner part b, the end of which forms a pusher. The lower part b has an internally threaded bore screwed on to the screw threaded end of the upper part a. The two parts of the valve shaft can be shifted the one with regard to the other by means of a wrench to be placed for instance on a square portion 12 of the valve shaft 0.. On the valve shaft a locking nut e is screwed, designed to secure the two parts in their adjusted position. The pusher hollow space n of piston I, one end of said spring bearing against a piston p of the collar and the other end against a transverse pin q. This transverse pin 'q is inserted through a bore 1 in the pusher shoe h and secured in position by means of a splint or in any other suitable manner.

A transverse wedge s, bearing into the pusher shoe h serves to limit the upward movement of the piston Z controlled by the tension of the spring 0. The hollow cam disc 1' is keyedj on the cam shaft t and works with both sides.

The operation of the device is as follows:.

The valve a is lifted by the cam portion 2" of I cam disc 2' cooperating with the pressure shoe 9, which might also consist of a roller. If the lifting: of the valve a. is completed (Fig. 1) and the, cam portion 1" is on theother side of the upper pusher shoe 9, the piston Z rolling on the inner side of the beaded edge 1' is pressed, in opposition to the action ofspring o, in the direction of the arrow in Fig. 1, the valve a being thereby closed. For the collar p of the piston Z a roller might be substituted. a

The transverse pin q, forming an abutment for the spring 0, ensures thatthe collar p of the piston, bearing with its entire surface against the inner side of the beaded rim 2', preserves its position. The spring 0 (Fig. 3) is especially provided to ensure a tight closing of the valve relative to the cylinder space, even if the motor is hot.

The transverse pin q, as already mentioned,

forms an abutment for one end of the spring,

ton adapted to guide said piston in. said lower arm, and a spring between said pin and said piston adapted.- to resiliently hold said piston in contact with said cam. I n

WALTER 1 the lower portion, the bifurcated end 1 being placed over the beaded edge i of the cam disc k. The lower pressure shoe h has a bore 1' for a yieldable movable piston l, which is hollow and has a vertical slot m. A spiral spring 0 is located in the the lower f

US1937152A 1930-12-23 1931-12-19 Positive valve control for internal combustion engines Expired - Lifetime US1937152A (en)

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DE1937152X 1930-12-23

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US1937152A true US1937152A (en) 1933-11-28

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068732A (en) * 1957-12-11 1962-12-18 Owens Corning Fiberglass Corp Flying cutter carriage having mechanical means to vary the instantaneous angular speed of the cutter carriage drive shaft
US4887565A (en) * 1987-03-18 1989-12-19 Bothwell Peter W Internal combustion engine
EP0429277A1 (en) * 1989-11-24 1991-05-29 Takuya Matsumoto A valve arrangement for a combustion engine
US5095948A (en) * 1989-11-04 1992-03-17 Mercedes-Benz Ag Simultaneous adjustment device for at least two pivoted elements
FR2679297A1 (en) * 1991-07-15 1993-01-22 Noel Jean Desmodromic valve-control device
WO2001012959A1 (en) * 1999-08-12 2001-02-22 Stefan Battlogg Valve gear, in particular for combustion engines
EP1247946A2 (en) 2001-03-26 2002-10-09 Stefan Battlogg Valve drive
WO2002081871A1 (en) * 2001-04-09 2002-10-17 Stefan Battlogg Desmodromic valve gear
US6705262B2 (en) 1998-06-16 2004-03-16 Stefan Battlogg Valve mechanism, in particular for internal combustion engines of motor vehicles
US20040154567A1 (en) * 2001-08-06 2004-08-12 Stefan Battlogg Device for converting a rotational movement into a reciprocating movement
US20050005885A1 (en) * 1999-08-12 2005-01-13 Stefan Battlogg Valve mechanism, in particular for internal combustion engines of motor vehicles
US20050092274A1 (en) * 2002-03-28 2005-05-05 Stefan Battlogg Device for converting a rotational movement into a reciprocating movement
EP1624161A1 (en) * 2004-08-03 2006-02-08 Stefan Battlogg Device for transforming rotating movement into translatory movement
US20060027194A1 (en) * 2004-08-03 2006-02-09 Stefan Battlogg Positive-guidance apparatus for conversion of a rotary movement of a drive to a reciprocating movement of a part
EP1752620A1 (en) * 2005-08-13 2007-02-14 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Desmodromic valve drive
US8033261B1 (en) 2008-11-03 2011-10-11 Robbins Warren H Valve actuation system and related methods
US8622039B2 (en) 2010-12-22 2014-01-07 James T. Dougherty Rockerless desmodromic valve system
US9366158B1 (en) 2010-12-22 2016-06-14 James T. Dougherty Unitary cam follower and valve preload spring for a desmodromic valve mechanism

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068732A (en) * 1957-12-11 1962-12-18 Owens Corning Fiberglass Corp Flying cutter carriage having mechanical means to vary the instantaneous angular speed of the cutter carriage drive shaft
US4887565A (en) * 1987-03-18 1989-12-19 Bothwell Peter W Internal combustion engine
US5095948A (en) * 1989-11-04 1992-03-17 Mercedes-Benz Ag Simultaneous adjustment device for at least two pivoted elements
EP0429277A1 (en) * 1989-11-24 1991-05-29 Takuya Matsumoto A valve arrangement for a combustion engine
US5058540A (en) * 1989-11-24 1991-10-22 Takuya Matsumoto Engine valve driving device
FR2679297A1 (en) * 1991-07-15 1993-01-22 Noel Jean Desmodromic valve-control device
US6705262B2 (en) 1998-06-16 2004-03-16 Stefan Battlogg Valve mechanism, in particular for internal combustion engines of motor vehicles
US6796277B2 (en) 1998-06-16 2004-09-28 Stefan Battlogg Valve mechanism, in particular for internal combustion engines of motor vehicles
US20040094108A1 (en) * 1998-06-16 2004-05-20 Stefan Battlogg Valve mechanism, in particular for internal combustion engines of motor vehicles
US6802287B2 (en) 1998-06-16 2004-10-12 Stefan Battlogg Valve mechanism, in particular for internal combustion engines
US20050005885A1 (en) * 1999-08-12 2005-01-13 Stefan Battlogg Valve mechanism, in particular for internal combustion engines of motor vehicles
US6904882B2 (en) 1999-08-12 2005-06-14 Stefan Battlogg Valve mechanism, in particular for internal combustion engines of motor vehicles
WO2001012958A1 (en) * 1999-08-12 2001-02-22 Stefan Battlogg A valve drive in particular for combustion engines of motor vehicles
WO2001012959A1 (en) * 1999-08-12 2001-02-22 Stefan Battlogg Valve gear, in particular for combustion engines
EP1247946A2 (en) 2001-03-26 2002-10-09 Stefan Battlogg Valve drive
US20040177821A1 (en) * 2001-04-09 2004-09-16 Stefan Battlogg Desmodromic valve drive
US7051691B2 (en) 2001-04-09 2006-05-30 Stefan Battlogg Desmodromic valve drive
WO2002081871A1 (en) * 2001-04-09 2002-10-17 Stefan Battlogg Desmodromic valve gear
US20040154567A1 (en) * 2001-08-06 2004-08-12 Stefan Battlogg Device for converting a rotational movement into a reciprocating movement
US6951148B2 (en) * 2001-08-06 2005-10-04 Stefan Battlogg Device for converting a rotational movement into a reciprocating movement
US20050092274A1 (en) * 2002-03-28 2005-05-05 Stefan Battlogg Device for converting a rotational movement into a reciprocating movement
US6968814B2 (en) 2002-03-28 2005-11-29 Stefan Battlogg Device for converting a rotational movement into a reciprocating movement
US20060027194A1 (en) * 2004-08-03 2006-02-09 Stefan Battlogg Positive-guidance apparatus for conversion of a rotary movement of a drive to a reciprocating movement of a part
EP1624161A1 (en) * 2004-08-03 2006-02-08 Stefan Battlogg Device for transforming rotating movement into translatory movement
US7421988B2 (en) 2004-08-03 2008-09-09 Stefan Battlogg Positive-guidance apparatus for conversion of a rotary movement of a drive to a reciprocating movement of a part
EP1752620A1 (en) * 2005-08-13 2007-02-14 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Desmodromic valve drive
US8033261B1 (en) 2008-11-03 2011-10-11 Robbins Warren H Valve actuation system and related methods
US8622039B2 (en) 2010-12-22 2014-01-07 James T. Dougherty Rockerless desmodromic valve system
US9366158B1 (en) 2010-12-22 2016-06-14 James T. Dougherty Unitary cam follower and valve preload spring for a desmodromic valve mechanism
US9488074B2 (en) 2010-12-22 2016-11-08 James T. Dougherty Rockerless desmodromic valve system

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