US248505A - Steam drop-hammer - Google Patents
Steam drop-hammer Download PDFInfo
- Publication number
- US248505A US248505A US248505DA US248505A US 248505 A US248505 A US 248505A US 248505D A US248505D A US 248505DA US 248505 A US248505 A US 248505A
- Authority
- US
- United States
- Prior art keywords
- steam
- hammer
- piston
- cylinder
- pipe
- 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
- 238000010276 construction Methods 0.000 description 4
- 240000001973 Ficus microcarpa Species 0.000 description 2
- 241000731961 Juncaceae Species 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000002459 sustained Effects 0.000 description 2
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
- B06B1/183—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with reciprocating masses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
- F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage
Definitions
- My invention relates to steam drop-hammers; and the object of my invention is to utilize the exhaust-steam which passes from beneath the ham mer-piston after the hammer is raised to increase the force of the blow made by the descending hammer, and to construct the hammer so it will deliver rapidly andwith short strokes a heavy blow.
- My invention consists in certain details of construction, as hereinafter described and specilically claimed. n
- A is he base of the machine.
- B B are two vertical guide-brackets, between which the hammer-head slides, and which are adjustable backward and forward by means of set-screws C.
- the lifting-cylinder D is formed of any desirable pipe, bored true.
- the base of the cylindcr is attached to a small steam-chest, E, in
- the cylinder is provided with trunnions T T, which set 'in journal-boxes t t, bolted to beams R R.
- valve D By means of the operative mechanism the valve D isthrown in the position seen in Fig.3,whereby the steampipe d is connected with the ingress-port e. rEhe steam passing beneath the piston raises the hammer until the piston strikes the spring f. The valve is then changed to the position shown in dotted lines, Fig. 3, cutting olf the supply of live steam andopeningportethrough steam-chest E to exhaust-pipe Gr. Instantly the steam beneath the piston, acting expansively,is thrown upon the upper surface of the piston as the hammer commences its descent, and thereby aids the delivery of the blow.
- a diminutive exhaust-pipe, a is inserted in the upper end of the cylinder, the said pipe being about one-fourth of the area of pipe G and at'- fordin g an exhaust when the piston again begins to rise.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
(No Model.)
J. 0..R1GHARDSGN.
STEAM DROP HAMMER.
No. 248,505. Patented Oct. 18,1881.
N Penas, Pham-Lumgmplw. wmngw". n c,
IlNrrnn STATES PATENT OFFICE.
JULIUS C. RICHARDSON, OF COLUMBUS, OHIO.
STEAM DROP-HAMMER.
SPECIFICATION forming part of Letters Patent No. 248,505, dated October 18, 1881. Application filed August 9.9, 1881. (No model.)
To all whom it may concern Be it known that I, J ULrUs C. RICHARDSON, of Columbus, in the State of Ohio, have invented certain I mprovements in Steam Drop- Hammers; and I hereby declare the following to be afull, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specication, in which- Figure l is a vertical section, through the lifting devices, of theimproved hammer. Fig. 2 is a vertical cross-section on line a', Fig. l. Fig. 3 is an enlarged view ofthe valve. Fig. 4 is a detail, to be referred to.
My invention relates to steam drop-hammers; and the object of my invention is to utilize the exhaust-steam which passes from beneath the ham mer-piston after the hammer is raised to increase the force of the blow made by the descending hammer, and to construct the hammer so it will deliver rapidly andwith short strokes a heavy blow.
My invention consists in certain details of construction, as hereinafter described and specilically claimed. n
In order that those skilled in the art may make and use my invention, I will proceed to describe the manner in which I have carried it out.
In the said drawings, A is he base of the machine.
B B are two vertical guide-brackets, between which the hammer-head slides, and which are adjustable backward and forward by means of set-screws C.
The lifting-cylinder D is formed of any desirable pipe, bored true. The base of the cylindcr is attached to a small steam-chest, E, in
which moves a valve, D', controlled bya bellcrank lever, a, and a rod, b, passing to a lever or treadle at the base or anvil of the hammer. rIhe steam is introduced through pipe d into the steam-chest E, and through port e when the valve is in position, as shown in Fig. 3. The live steam rushes through port e beneath the piston-head and raises the hammer, the piston coming in contact with a cushioningspring, f,sustained by an adjustable bar, g, secured between two vertical clamping-plates, L h, fastened to the head t'.
From the end of the steam-chest a large ex haust-pipe, Gr, passes to and opens into the upper end of the cylinder above the piston. 'Ihe valve D is bored longitudinally, so as to balance it in the steam-chest E.
Near the upper head, i, the cylinder is provided with trunnions T T, which set 'in journal-boxes t t, bolted to beams R R.
The operationis as follows: By means of the operative mechanism the valve D isthrown in the position seen in Fig.3,whereby the steampipe d is connected with the ingress-port e. rEhe steam passing beneath the piston raises the hammer until the piston strikes the spring f. The valve is then changed to the position shown in dotted lines, Fig. 3, cutting olf the supply of live steam andopeningportethrough steam-chest E to exhaust-pipe Gr. Instantly the steam beneath the piston, acting expansively,is thrown upon the upper surface of the piston as the hammer commences its descent, and thereby aids the delivery of the blow. A diminutive exhaust-pipe, a, is inserted in the upper end of the cylinder, the said pipe being about one-fourth of the area of pipe G and at'- fordin g an exhaust when the piston again begins to rise. By obviating the placing of the cylinder in a rigid frame connected with the anvil, as l'has heretofore been done in steamhammers, I prevent the heavy strains and racking, which so soon renders unserviceable this class of machines. I also do away with all rocker-arms, sliding bevels in the hammer-head, have no attachment to the columns, thereby simply using the treadle-rod for operating the valve. The swinging cylinder enables me to set the anvil over to a degree, if necessary, to make the dies register perfectly.
I have demonstrated by actual tests that with a machine constructed according to my invention I can perform a given amount of work with a cylinder one-third shorter than heretofore necessary, thereby saving steampower, time, and fuel.
l am aware that heretofore steam-hammers have been made wherein the steam beneath the piston, for raising the hammer, has been suddenly transferred from beneath the piston into the cylinder above the piston to aid the blow as the valve cuts` off the live steam, and
hence I make no broad claim to such invention.
I am also aware that an oscillating steam- IOO cylinder, mounted on trunnions at its lower end, has been utilized for operating a radiallymoving hammer, and consequently I make no broad claim to mounting the cylinder on trunnions.
I am also aware that steam-hammers of this class have been made wherein an exhaust-pipe has been used above the piston of an equal or greater area than the exhaustpipe corresponding to my pipe G; but in such construction any good effect of the steam on the upper side of the piston is lost, owing to its full and free access to the air.
Having thus described nly invention, what I claim as new, and desire to secure by Letters Patent, is
1. In a steam-hammer, the cylinder D, pro-
Publications (1)
Publication Number | Publication Date |
---|---|
US248505A true US248505A (en) | 1881-10-18 |
Family
ID=2317826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US248505D Expired - Lifetime US248505A (en) | Steam drop-hammer |
Country Status (1)
Country | Link |
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US (1) | US248505A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2942503A (en) * | 1957-01-31 | 1960-06-28 | Pneumatic Drop Hammer Company | Power operated hammers |
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0
- US US248505D patent/US248505A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2942503A (en) * | 1957-01-31 | 1960-06-28 | Pneumatic Drop Hammer Company | Power operated hammers |
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