US583688A - Expansion-cam - Google Patents
Expansion-cam Download PDFInfo
- Publication number
- US583688A US583688A US583688DA US583688A US 583688 A US583688 A US 583688A US 583688D A US583688D A US 583688DA US 583688 A US583688 A US 583688A
- Authority
- US
- United States
- Prior art keywords
- cam
- expansion
- throw
- wedge
- lasting
- 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
Links
- 230000002045 lasting Effects 0.000 description 8
- 239000000470 constituent Substances 0.000 description 4
- 239000010985 leather Substances 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
- F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
- F16H53/04—Adjustable cams
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/11—Tripping mechanism
- Y10T74/111—Speed controlled
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2101—Cams
- Y10T74/2102—Adjustable
Definitions
- This invention has for its object to provide a novel cam capable of expansion by the operator for the purpose of varying its throw as necessity may require.
- machines such, for example, as lasting or pulling-over machines, where the lasting operation or the operation of the nippers which act upon the leatheris controlled by a cam-there has heretofore to my knowledge been no means for varying the action of the lasting devices or nippers for' pulling over or stretching the leather to a greater or less extent according to its weight or condition.
- FIG. 1 shows in front elevation my invention in operative position.
- Fig. 2 is an enlarged side elevation of the cam, partly broken away, the operating-wedge being omitted.
- Fig. 3 is a central vertical section taken on the line 3 3 of Fig. 2.
- the cam is composed of a body H and two side plates H H the body having an adjustable throw point or block H adapted to slide radially between the side plates referred to and provided with a dovetailed groove, which is entered by the corresponding dovetailed Wedge H shown as rigidly connected with a groove-collar H splined on the main shaft A and rotatable therewith, but having an back and forth as required on the shaft A a bracket 6 being shown supporting a roll e to be operated by the cam, the roll e being held against the cam by the usual spring (not shown) in the spring-barrel 6
- the cam is positively operated by reciprocating the collar II on the main shaft, the wedge H then sliding back and forth in the dovetailed groove of the throw-block transversely of the cam. This serves to expand and contract the cam, the cam-surface thereof changing in shape correspondingly, within the two extreme positions shown in Fig. 3 by full and dotted lines.
- cam While such a cam is particularly useful in lasting and pulling-over machines, yet its use is not limited in this respect, for it may be applied to any kind of machine where a variable cam movement is desired.
- An expansion-cam having a movable throw-block carried thereby as a constituent part thereof, combined with a wedge carried by said cam, and interlocked with the throwblock, interlocking means being provided therefor on the wedge and throw-block and means to move said wedge to vary the position of the throw-block, substantially as described.
- An expansion-cam havingathrow member movable therein and provided at its inner end with a dovetailed edge, a grooved collar,
- a cam-body having a throw member forming a constituent part thereof, said throw member being movable relatively thereto in a radial direction, whereby said cam may be expanded or contracted and the cam-surface thereof changed in shape, and a Wedge inovname to this specification in the presence of ing parallel to the axis of the said cam-body, two subscribing Witnesses.
- said wedge having means whereby the same 1 j i j r 9 1 E. 1s movably connected to said throw member CHAhLES 1 RI AU to positively move the same in and out, snb- ⁇ Vitnesses:
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
(No Model) 0. P'. LAWRENCE.
EXPANSION 0AM. No. 583,688. Patented June 1,1897.
Z 5 JCT/670609" UNTTED STATES PATENT EEICE.
CHARLES P. LAIVRENCE, NORWVAY, MAINE.
EXPANSION-CAM.
SPECIFICATION forming part of Letters Patent No. 583,688, dated June 1, 1897. Application filed February 7, 1895. Serial No. 537,574. (No model.)
To aZZ whom it may con/acre.
Be it known that I, CHARLES P. LAWRENCE, of Norway, county of Oxford, State of Maine, have invented an Improvement in Expansion- Cams, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.
This invention has for its object to provide a novel cam capable of expansion by the operator for the purpose of varying its throw as necessity may require. In many machinessuch, for example, as lasting or pulling-over machines, where the lasting operation or the operation of the nippers which act upon the leatheris controlled by a cam-there has heretofore to my knowledge been no means for varying the action of the lasting devices or nippers for' pulling over or stretching the leather to a greater or less extent according to its weight or condition.
By the use of an expansion-cam embodying my invention, if it is found that the usual throw of the cam is insufficient to properly stretch or pull over the leather, the operator by a simple movement may vary the throw of the cam to increase or magnify its action.
In the drawings I have illustrated my invention in connection with a detail of a lasting-machine, Figure 1 showing in front elevation my invention in operative position. Fig. 2 is an enlarged side elevation of the cam, partly broken away, the operating-wedge being omitted. Fig. 3 is a central vertical section taken on the line 3 3 of Fig. 2.
Referring to the drawings, while I have illustrated my invention as used in connection with a lasting-machine, yet it should be understood that my invention is not limited as to its use to any particular machines or class of machines.
The cam is composed of a body H and two side plates H H the body having an adjustable throw point or block H adapted to slide radially between the side plates referred to and provided with a dovetailed groove, which is entered by the corresponding dovetailed Wedge H shown as rigidly connected with a groove-collar H splined on the main shaft A and rotatable therewith, but having an back and forth as required on the shaft A a bracket 6 being shown supporting a roll e to be operated by the cam, the roll e being held against the cam by the usual spring (not shown) in the spring-barrel 6 In use the cam is positively operated by reciprocating the collar II on the main shaft, the wedge H then sliding back and forth in the dovetailed groove of the throw-block transversely of the cam. This serves to expand and contract the cam, the cam-surface thereof changing in shape correspondingly, within the two extreme positions shown in Fig. 3 by full and dotted lines.
While such a cam is particularly useful in lasting and pulling-over machines, yet its use is not limited in this respect, for it may be applied to any kind of machine where a variable cam movement is desired.
Having described one form of my invention, what I claim, and desire to secure by Letters Patent, is
1. An expansion-cam, having a movable throw-block carried thereby as a constituent part thereof, combined with a wedge carried by said cam, and interlocked with the throwblock, interlocking means being provided therefor on the wedge and throw-block and means to move said wedge to vary the position of the throw-block, substantially as described.
2. An expansion-cam, havingathrow member movable therein and provided at its inner end with a dovetailed edge, a grooved collar,
and its attached dovetailed wedge, cooperating with and to positively vary the position of the said throw member out and in rela tively to the remaining cam-surface of the cam, substantially as described.
3. A cam-body, having a throw member forming a constituent part thereof, said throw member being movable relatively thereto in a radial direction, whereby said cam may be expanded or contracted and the cam-surface thereof changed in shape, and a Wedge inovname to this specification in the presence of ing parallel to the axis of the said cam-body, two subscribing Witnesses.
said wedge having means whereby the same 1 j i j r 9 1 E. 1s movably connected to said throw member CHAhLES 1 RI AU to positively move the same in and out, snb- \Vitnesses:
stantially as described. HOWARD D. SMITH,
In testimony whereof I have signed my M. P. SMITH.
Publications (1)
Publication Number | Publication Date |
---|---|
US583688A true US583688A (en) | 1897-06-01 |
Family
ID=2652361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US583688D Expired - Lifetime US583688A (en) | Expansion-cam |
Country Status (1)
Country | Link |
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US (1) | US583688A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2492555A (en) * | 1946-02-19 | 1949-12-27 | Frank J Cozzoli | Filling machine |
US3523465A (en) * | 1968-10-31 | 1970-08-11 | William Emory Harrell | Adjustable cam shafts |
US5314955A (en) * | 1993-01-21 | 1994-05-24 | Lord Corporation | Oil-resistant coating compositions |
-
0
- US US583688D patent/US583688A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2492555A (en) * | 1946-02-19 | 1949-12-27 | Frank J Cozzoli | Filling machine |
US3523465A (en) * | 1968-10-31 | 1970-08-11 | William Emory Harrell | Adjustable cam shafts |
US5314955A (en) * | 1993-01-21 | 1994-05-24 | Lord Corporation | Oil-resistant coating compositions |
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