| US2697460A | 1954-12-21 | |||
| US4252239A | 1981-02-24 | |||
| US4152961A | 1979-05-08 | |||
| US4243083A | 1981-01-06 | |||
| US2552234A | 1951-05-08 | |||
| US3056439A | 1962-10-02 | |||
| US3080897A | 1963-03-12 | |||
| DE366549C | 1923-01-06 | |||
| US4317282A | 1982-03-02 |
| 1. | , Radial arm machines featuring a variable size overall dimension in order to be portable. |
| 2. | Radial arm machines being easily assembled in a working version and also disassembled in two main parts by the means of only one bolt for the fixing. |
| 3. | Radial arm machine including a base where the entire upper part, support columns radial arm motor carriage , there can be fixed in two different settings which are one elevated for working and one parallel for the portable version of the machine. |
| 4. | Machines as claimed in claim 3 that, when set for the portability, which is with the upper part fixed parallel to the base, can perform like a suitcase and can also rest vertical to the ground. |
| 5. | Radial arm with the .shape like an upside down "ϋ" and with a steel bar in the middle so that a carriage for the motor can run across attached to the same through opposite and replaceable balanced adjustable slides. Those slides with antifriction pads or bearings, etc. |
| 6. | Carriages for motorization of radial arm machines which implement a yoke to hold a bevel rule by two conic' adjustable grub screws. The same rule swings at different angles where it can be blocked by two bolts with a shoulder dividing them into two sections, one like a smooth pin and the other with a thread so that they block the bevel rule in the yoke only by tightening in the thickness of the brackets of the yoke avoiding to force and alter the width between the two brackets. |
| 7. | Adapter box featuring a round bracket to hold an electric drill in one side and a collar to hold safety guards in the other side, whre there is also a spindle for the tools. This type of adaptater box particularly suitable to be used in radial arm machines where they adjust also the speed and the direction of the rotation of the spindle in relation to those of the drill. |
Field of the Invention
The present invention relates to a portable radial arm machine, with an adjustable overall dimension, suitable to work on wood, light metals, plastic etc.
This machine is of general application because, aside frpm its remarkable performances, it is easily carried like a luggage and displays very little space when it is stored.
Summary of the Invention
The present invention provides a system for an easy assembling and disassembling of a radial arm machine into a working setting and also into a portable setting.
As referred to hereinabove, it is mainly suitable for giving an easy portability and hide away feature. By means of only one bolt, it is possible to assemble or disassemble the machine from working position while, by simple fixings, the ensemble will be set in the resting position and with features similar to those of a luggage.
In accordance with a preferred embodiment thereof the system of the invnetion includes the movement of the motor carriage on balanced adjustable slides in order to limit the weight and maintenance. The system completes the portability concept by including also the possibility to use an adapter to hold portable drills as a motor.
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Another important feature of this system of invention ±s that it gives the possibility to manufac¬ ture a very efficient portable radial arm machine at an amazing low cost. Other features and advantages of the invention will be set forth, or apparent from, the detailed description of a preferred embodiment found hereinbelo .
Brief Description of the Drawings
Relating to a preferred embodiment of the invention, the figures in the drawing No. 1 show the basic settings, in the drawing No. 2 the system of the carriage and in the No. 3 drawing the adapter for portable drills.
Description of the Preferred Embodiment Referring to the various figures in the drawing No. - 1 - the three aggregated parts which are the basic components for the entire machine are the base 1, with the working table - PL -, the upper part 2, with the pillars and the radial arm and the motore carriage 3.
In accordance with the preferred emobidment of the invention, and following the details in the three drawings respectively, a description follows herewith: Drawing 1 (basic settings) : two plates - PSA, PSB - are the junctions to assemble the machine by the means of only one bolt Bϋ - in the working setting so that the components 2, 3 will be fixed with an elevated position over the base 1. Using the same bolt - BU - and in consideration that a friction ring -
APA - is inserted between the two union plates - PSA, PSB - the radial arm can be firmly set at different angles over the working table - PL -.
Prefixed settings at common angles are possible by some stops - PR -.
For the portable version, the entire upper group - 2, 3 - will be assembled parallel to the base 1 and fixed on the lower side - PIN - of the same by means of one bracket - APP - and two anchorages - SQ, FAS -.
A handle - MNA - will allow to carry the esemble like a suit-case - VAL - .
Few rubber plugs - TG - help for the different positions.
The two pillars of the group 2 are fixed to the plate - PSB - in one side and to the handle MNB - in the other side.
The radial arm slides vertically on the pillars by the help of one driving pinion - VL - and a threaded portion - CR - in one pillar. Bolt - VF is tightened when the radial arm is positioned.
Drawing 2 (system of the carriage) :
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The radial arm - BR - is built with the profile of an upside "U" with a steel pipe - BAC - fixed in its center part.
The steel pipe and the edges - BI - of the "U" profile are the working points for the antifriction components - TAR, TAS - of the bracket both to join and to slide the carriage 3 in the radial arm BR -.
The carriage 3 includes, beside other items: a collar - BS - with antifriction plugs - TAS - . A joining member - PP - where the other antifric- tion/rechangeable/ adjustable pins - TAR - are placed. A yoke - SOF - that by a jointing pivot - BC - and a handle - MBLOC -, will be released or fixed on the member - PP - a friction ring is inserted in between - AFB -. A lever - L - and several stopping points - PRP - to make possible prefixed settings.
A bevel rule - SM - which is fixed - PAR/BIL - by two conic adjustable joint grub screws - ACR - allowing it to swing-PAR/VER-; it is blocked at different angulations by two pins - VAN partially threaded and which have a shoulder in order to block only by tightening on the thickness of the brackets of the yoke - PAR/FIX - with a screw nut or a wing nut; so far avoiding to force and eventually to alter the width between the two brackets.
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Drawing 3 (adapter) :
The adapter makes it possible to use a portable electric drill as a motor and has the form of a rectangular box 4. In the side A there is a collar - COL - to hold the drill and in the side B there is a spindle - AUT - to hold the flanges - FL - and the tools.
A bracket - ACU - gives the possibility of fixing the safety guards, also on the side B. The adapter adjusts the speed and is backspinning the spindle, relative to that of the drill, by means of two gears - SEZ. 4, INGRA, INGRB -. The adapter will not interfere to the setting at different angles of the bevel rule - PAR/TA/A, PAR/TR/B - .
Although the invention has been described relative to a preferred embodiment thereof, it will be appreci¬ ated by those skilled in the art that variations and modifications can be effected in the embodiment without departing from the scope and spirit of the invention.
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