US54457A - Improvement in cross-heads - Google Patents
Improvement in cross-heads Download PDFInfo
- Publication number
- US54457A US54457A US54457DA US54457A US 54457 A US54457 A US 54457A US 54457D A US54457D A US 54457DA US 54457 A US54457 A US 54457A
- Authority
- US
- United States
- Prior art keywords
- cross
- piston
- head
- heads
- rod
- 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
- 239000011435 rock Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 210000003467 Cheek Anatomy 0.000 description 2
Images
Classifications
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C5/00—Crossheads; Constructions of connecting-rod heads or piston-rod connections rigid with crossheads
Definitions
- My invention consists of a cross-head Aconstructed in the peculiar ma-nnerfully described hereinafter, with the view of preventing the bending and breaking of the piston-rod, the rocking of the piston, and unequal wearin g of the sliding blocks.
- FIG. l is a vertical section of my improved cross-head; Fig. 2, an end view ot' the same; Fig. 3, a section on the line l 2, Fig. l; and Fig. 4, a view showing a cross-head of the ordinary construction.
- rEhe cross-head consists of the portion a, to which the end of the piston-rod is secured, and the side pieces or cheeks, b and b, connected together by the upper and lower transverse pieces, c and c', and bythe pin d, which is embraced by the strap at the end of the connecting-rod.
- B and B are the two sliding blocks, the outer edge of each of which is made of a V form to suit similarly-shaped grooves in the guides.
- each of the studs being furnished with a jam-nut, e.
- the horizontal line x x represents the center line of the cylinder and piston-rod, andu It has been usual to so construct crossheads of this class that the pin d was situated in advance of or behind the vertical line l 2.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
UNITED STATES PATENT OFFICE.
JOHN WEST, OF BETHLEHEM, PENNSYLVANIA.
IMPROVEMENT IN CROSS-HEADS.
Specication forming part of Letters Patent No. 54,457, dated May 1, 1866.
To all whom it may concern:
Be it known that I, JOHN WEST, of Bethlehem, Northampton county, Pennsylvania, have invented an Improvementin Gross-Heads; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.
My invention consists of a cross-head Aconstructed in the peculiar ma-nnerfully described hereinafter, with the view of preventing the bending and breaking of the piston-rod, the rocking of the piston, and unequal wearin g of the sliding blocks.
In order to enable others skilled in the art to make and use my invention, I will now proceed to describe its construction and operation.
On reference to the accompanying drawings, which form a part of this specification,
- Figure l is a vertical section of my improved cross-head; Fig. 2, an end view ot' the same; Fig. 3, a section on the line l 2, Fig. l; and Fig. 4, a view showing a cross-head of the ordinary construction.
rEhe cross-head consists of the portion a, to which the end of the piston-rod is secured, and the side pieces or cheeks, b and b, connected together by the upper and lower transverse pieces, c and c', and bythe pin d, which is embraced by the strap at the end of the connecting-rod.
The whole of these parts are in the present instance represented as made in one piece and of cast-iron, although the pin d may be made separately from the other vparts. and afterward secured to the same, and the crosshead may he otherwise constructed in a manner differing from that illustrated, without departing from the main features of the invention.
B and B are the two sliding blocks, the outer edge of each of which is made of a V form to suit similarly-shaped grooves in the guides.
In each of the sliding blocks B B of the cross-head iits the plain end of a stud, D, one
'of which is screwed into each of the transverse pieces c c', each of the studs being furnished with a jam-nut, e.
The horizontal line x x represents the center line of the cylinder and piston-rod, andu It has been usual to so construct crossheads of this class that the pin d was situated in advance of or behind the vertical line l 2. f
Owing to the inclined positions assumed by the connecting-rod, as shown in Fig. 4, pressnre was exerted on the cross-head in the direction of the arrow, h'rst one guide and then the other having to resist this pressure as the engine operated. This being the case, it will be evident that when the pin d is situated in advance ot' the line l 2, as shown in Fig. 4, there is a tendency to rock the crosshead, and consequently to bend the piston-rod and rock the piston as it passes back and forth in the cylinder, the motion thus imparted to the cross-head also tending to wear away the sliding blocks at the ends, so that they become rounded on their bearing-faces.
By so arranging the pin el, however, that a line drawn vertically through its center shall bisect the slides the above-mentioned force will be exerted directly on the centers of the sliding blocks, and will consequently have no tendency to rock the cross-head, the bending or breaking of the piston-rod, rocking of the piston, and unequal wearing of the sliding blocks being thus prevented.
I claim as my invention, and desire to secure by Letters Patent- .Ihe within-described cross-head, consisting of the portion c, to which the piston-rod is secured, the side pieces, b and b', transverse pieces c and c', the pin d, the sliding blocks B and B', and screw-studs D D, thewhole being arranged as and for the purpose herein set forth.
Iny testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
' JOHN WEST. Witnesses:
CHARLES E. FosTE, JOHN WHITE.
Publications (1)
Publication Number | Publication Date |
---|---|
US54457A true US54457A (en) | 1866-05-01 |
Family
ID=2124000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US54457D Expired - Lifetime US54457A (en) | Improvement in cross-heads |
Country Status (1)
Country | Link |
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US (1) | US54457A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030205463A1 (en) * | 2001-11-14 | 2003-11-06 | Perry Andrew C. | Textured-metastable aluminum alloy sputter targets and method of manufacture |
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0
- US US54457D patent/US54457A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030205463A1 (en) * | 2001-11-14 | 2003-11-06 | Perry Andrew C. | Textured-metastable aluminum alloy sputter targets and method of manufacture |
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