Supports – Machinery support – Movable machine
Patent
1987-12-04
1989-06-06
Foss, J. Franklin
Supports
Machinery support
Movable machine
125 14, 248201, 2482224, 2482951, F16M 1300
Patent
active
048364940
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION AND PRIOR ART
This invention concerns a device according to the preamble of the appended claim 1. The rail in question is preferably intended to serve for guiding a carriage driveable along the rail and carrying a machining tool, especially a saw tool, driven by a motor also arranged on the carriage. The machining and particularly the sawing are intended to be carried out on that surface, on which the rail is mounted. The surface may in the practice consist of a building wall of concrete or another arbitrary material.
A device according to the preamble of claim 1 is described in U.S. Pat. No. 3,763,845. The guide does there consist of a slot extending straight through the rail, while the connecting element can be brought to engage into the guide in the transversal direction of the rail by one portion. The means for clamping connection of the connecting element and the mounting element consists of a screw, which with clearance passes through a bore in the connecting element and comes into engagement with a threaded bore in the mounting element. When the rail is to be mounted on a wall surface generally two mounting elements are first of all fixed upon this, whereupon the rail is mounted to the mounting elements by means of two connecting elements and screws belonging thereto. When the rail is to be mounted on a first of the mounting elements the operator has to correctly locate the rail generally having an important weight with respect to the mounting element and during holding the rail in the right vertical position the operator shall also try to introduce the screw protruding through the connecting element into the threaded bore in the mounting element. In order to achieve this the operator must try to hold the rail with one of his hands and manipulate the screw with the other. Once the operator has succeeded to introduce the screw into the orifice of the threaded bore he has to try to turn this screw by hand in order to get the same into engagement with the thread of the threaded bore. Using a turning tool during this initial phase would probably make it even more difficult for the operator to correctly locate the threaded bore. Once the operator has succeeded in obtaining an engagement between the screw and the threaded bore he has to, during continued holding of the rail in the desired vertical position, carry out further turning of the screw, which then may be done by means of a tool. The screwing is suitably carried out until the rail is secured in the desired position. Subsequently the rail may by means of an additional connecting element and a screw be fixed to the second mounting element, and this operation is a little bit easier to carry out, since the rail at that time is vertically located, but nevertheless it may be troublesome to introduce the screw into correct thread engagement with the threaded bore. Before the thread engagement between a screw and the threaded bore belonging thereto in the mounting element has been achieved the connecting element is free to fall from the rail so that the operator accordingly has to hold the connecting element and the screw by his one hand all the time. It will be apparent that the mounting work discussed is very hard to carryout from the load as well as the manipulating point of view. It may sometimes be possible to get some help in the mounting work by letting the lower end of the rail rest upon some underlayer or support, for instance a floor, but this is certainly not always possible, especially not if the rail shall be mounted on a wall surface in horizontal or another non-vertical position. The mounting work gets particularly burdensome when the rails are very long and by that heavy and when the rail is loaded by the machining equipment and/or the carriage therefor.
SUMMARY OF THE INVENTION
The object of the invention is to reduce the drawbacks discussed above concerning the mounting work and thus to provide a device making it considerably easier to mount the rail on the mounting elements.
According to the invention this ob
REFERENCES:
patent: 3250584 (1966-05-01), Tassell
patent: 3462110 (1967-06-01), Cheslock
patent: 3652048 (1972-03-01), Hartman
patent: 3763845 (1973-10-01), Hiestand et al.
Foss J. Franklin
Talbott David L.
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