Tool driving or impacting – With vehicle support for drive – Drive structure moved to nonuse position for transport
Patent
1976-04-08
1978-11-07
Purser, Ernest R.
Tool driving or impacting
With vehicle support for drive
Drive structure moved to nonuse position for transport
173 20, 173 43, 173119, 173139, 173147, E04H 1726
Patent
active
041240812
ABSTRACT:
An improved portable hydraulically powered driving machine, for driving posts, ground anchors, concrete breakers, core drills, and the like work pieces into the ground, pavements or wall structure, has a tower in the form of a stanchion carried by an extensible pedestal mounted boom rig on a mobile base such as a conventional truck and in its working position is adapted to rest on the ground, pavement or wall structure at a controlled attitude relative thereto to guide a hydraulically powered hammer and hold an anvil against the work piece and, in its transporting position is adapted to be secured horizontally at a low level in a truck-mounted frame. The stanchion down-crowds the hammer guide to load a compression spring which maintains the anvil continuously against the work piece even after the impact force of the hammer blow is expended and the work piece advances a considerable distance. The hammer is also spring-loaded, a hydraulic jack lifts the hammer and stretches the spring and the stroke of the hammer together with the rapidity of the hammer blows is controlled by a rotating dump valve for the jack. The speed of rotation of the dump valve is controlled by the machine operator with faster speeds decreasing the stroke of the hammer and increasing the number of blows delivered per minute. Hydraulic controls are provided to accurately place the stanchion at the work site and to control the angle and direction in which the hammer blows are to be delivered. Air is introduced into the fluid return line from the dump valve for cushioning fluid flow.
REFERENCES:
patent: 2627846 (1953-02-01), Boedecker
patent: 2881739 (1959-04-01), Huppert
patent: 2903949 (1959-09-01), Simmonds
patent: 3165332 (1965-01-01), Barker, Jr. et al.
patent: 3240279 (1966-03-01), Dorkins
patent: 3442338 (1969-05-01), Broderson
patent: 3805896 (1974-04-01), Bauer
patent: 3827507 (1974-08-01), Lance
patent: 3835940 (1974-09-01), Winter
patent: 3961672 (1976-06-01), Welsch
Foresight Industries
Pate III William F.
Purser Ernest R.
LandOfFree
Post driving machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Post driving machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Post driving machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2229874