US875431A - Steam-shovel a-frame and connection. - Google Patents

Steam-shovel a-frame and connection. Download PDF

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Publication number
US875431A
US875431A US27856305A US1905278563A US875431A US 875431 A US875431 A US 875431A US 27856305 A US27856305 A US 27856305A US 1905278563 A US1905278563 A US 1905278563A US 875431 A US875431 A US 875431A
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United States
Prior art keywords
frame
saddle
connection
shovel
steam
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Expired - Lifetime
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US27856305A
Inventor
Olaf Hetlesaeter
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Allis Chalmers Corp
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Allis Chalmers Corp
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Publication date
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Priority to US27856305A priority Critical patent/US875431A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/94—Safety gear for limiting slewing movements

Definitions

  • This invention relates to certain improvements in a laterally stiffening member supporting guys for an over-hanging arm or boom.
  • this feature is termed an A-frame, and is in the structure disclosed a steel forging.
  • Figure 1 is a front elevation partly broken away, of my improved A-frame With saddle or cap therefor; Fig. 2
  • Fig. 8 is a rear elevation of the guy connection or saddle; and Fig. 4 is a side elevation of a swingably mounted overhanging arm for an excavator or crane, showing how my A-frame is applied thereto.
  • the one-piece member 1 has the spaced legs serving to laterally stiffen the guys which are attached to the connection 2 at the bent portion of this one-piece A-frame. As there is not proportionally as great a strain on the frame at the bend, this portion is reduced to facilitate bending and thus the cost of manufacture is reduced.
  • Bolts 3 securely hold the saddle 2 in position on A-frame 1, the holes being bored in the A-frame after the parts are assembled to insure a more accurate fit.
  • This connection or saddle 2 has lugs 4 projecting from one side to which the guys may be attached.
  • This saddle 2 also has a continuous recess 5 in its under side Which receives the reduced bent portion of the A-frame 1.
  • the back guys 6 engage the lugs 4 While the boom guys 7 connect the saddle 2 With the sWingable overhanging arm or boom 8.
  • a one-piece A-frame havin a reduced portion at the bend, and a saddle having a continuous recess for the A-frame.

Description

PATENTED DEC. 31, 1907.
O. HETLESAETER. STEAM SHOVEL; A-FRAME AND CONNECTION.
APPLIGATION FILED SEPT.15, 1905.
W INVENTOR B2 ATTORNEY.
W 1 TN ESSES: @A
THE NORRIS PETERS co, wnsl-uucrmv, n. c.
UNITED STATES PATENT OFFICE.
OLAF HETLESAETER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-CHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.
STEAM-SHOVEL A-FRAME AND CONNECTION.
Specification of Letters Patent.
Patented Dec. 31, 1907.
Application filed September 15, 1905. Serial No. 278,563.
T 0 all whom it may concern:
Be it known that I, OLAF HETLEsAETER, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Steam Shovel A-Frames and Connections, of Which the following is a specification.
This invention relates to certain improvements in a laterally stiffening member supporting guys for an over-hanging arm or boom.
More particularly applied to excavators, this feature is termed an A-frame, and is in the structure disclosed a steel forging.
By my improvements I produce a strong structure having a neat and compact connection for the guys, which is not liable to Work loose.
In the drawings,Figure 1 is a front elevation partly broken away, of my improved A-frame With saddle or cap therefor; Fig. 2
is a side elevation thereof; Fig. 8 is a rear elevation of the guy connection or saddle; and Fig. 4 is a side elevation of a swingably mounted overhanging arm for an excavator or crane, showing how my A-frame is applied thereto.
The one-piece member 1 has the spaced legs serving to laterally stiffen the guys which are attached to the connection 2 at the bent portion of this one-piece A-frame. As there is not proportionally as great a strain on the frame at the bend, this portion is reduced to facilitate bending and thus the cost of manufacture is reduced.
Bolts 3 securely hold the saddle 2 in position on A-frame 1, the holes being bored in the A-frame after the parts are assembled to insure a more accurate fit. This connection or saddle 2 has lugs 4 projecting from one side to which the guys may be attached. This saddle 2 also has a continuous recess 5 in its under side Which receives the reduced bent portion of the A-frame 1. The back guys 6 engage the lugs 4 While the boom guys 7 connect the saddle 2 With the sWingable overhanging arm or boom 8.
Having thus described my invention, What I claim and desire to secure by Letters Patent 1s,
l. A one-piece A-frame having a reduced portion at the bend.
2. A one-piece A-frame havin a reduced portion at the bend, and a saddle having a continuous recess for the A-frame.
3. The combination of a support, an A- frame on the support, a saddle formed with a single recess for reception of the A-frame apex, and guys connecting to the saddle for staying the A-frame.
d. The combination of a support, a onepiece A frame on the support, a saddle formed With a continuous recess into Which the apex of the A-frame is housed, and guys connecting to the saddle for staying the A- frame.
5. The combination of a support, a onepiece A-frame on the support and having a reduced portion at the apex, a saddle on the A-frame at the reduced portion, a boom on the support, and guys for staying the boom and A-frame.
6. The combination of an A-frame bent to form an apex and having a reduced portion at the bend, and a saddle attached to the A- frame at the reduced portion.
7. A forged one-piece A-frame having a reduced portion at the forged apex.
In testimony whereof I affix my signature in presence of tWo Witnesses.
OLAF HETLESAETER.
Witnesses:
MAX W. SABLE, L. P. MARTIN.
US27856305A 1905-09-15 1905-09-15 Steam-shovel a-frame and connection. Expired - Lifetime US875431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US27856305A US875431A (en) 1905-09-15 1905-09-15 Steam-shovel a-frame and connection.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27856305A US875431A (en) 1905-09-15 1905-09-15 Steam-shovel a-frame and connection.

Publications (1)

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US875431A true US875431A (en) 1907-12-31

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