US2384777A - Machine for finishing the runner face of skis - Google Patents

Description

Sept. 11, 1945. B. Q, WESTMAN MACHINE FOR FINISHING THE RUNNER FACE OF SKIS Filed July 26', 1943 Patented Sephll, 1945 imcnmnlronrmisnmc THERUNNER. 1.. .FACEOFSKIS 7- Bror Otto Westman, Hudiksvall, Sweden Application Jul1v=26, 1943, Serial No. 496,209

' In Sweden December 18, 1941 V i Claims.

My invention is for improvements in and relating to sand papering machines, especially for finishing the runner face of skispf'the type having a moving endless dressing band of emery cloth or the like.

An embodiment of the invention will be described in the following with reference to the accompanying drawing. In the drawing Fig. 1 is a top View, Fig. 2 is a side view and Fig. 3 an end view of the machine. i

In the drawing the reference character I denotes a beam forming the frame of the machine. Two drums 2 and 3 are rotatably mounted in the frame and carry an endless dressing band 4. The drum 3 is by means of a'pulley 30 driven from a motor notshown. The dressing band passes over a dressing table 5 which by means of a transverseridge fi rests in a groove in a support I so as tobe capable of a tilting movement. The upper side ofthe' dressing table is rounded with the exception of the central part 18 which is plane and in the normal position of the dressing table, as shown in Fig.2, is parallel with the plane of the feed table described in the following.

The support 1 is angle-shaped and is slidably mounted in the frame and for this purpose provided with a rib 9 which fits into a corresponding groove in the frame. Bolts Iii, only one of which is shown in the drawing, are screwed into the support 7 and pass through elongated holes II in the web of the beam I. To the bolts II] are connected squares 12 on which are mounted small rollers l3 which contact with the inside of the web of the beam. When the bolts have been adjusted so asto allow of a smooth and steady sliding movement of the support 1 they are locked by means of nuts [4 on the other side of the support. At the upper part of the support is provided a lug [5 with which engages one end of a two-armed lever I 6 swingably mounted at l! in the frame. Into the end of the other arm of the lever I6 is screwed a set screw l9 provided with a lock nut 18, and by means of this screw the lower position of the support I and thus of the dressing table 5 may be adjusted and fixed. On the screw I9 is provided a spring 2| one end of which engages with the upper flange of the beam and the other nd of which engages with a nut 20 on the set screw I9. The object of this device is to provide a certain degree of flexibility of the dressing table 5 to be used when finishing skis the middle part of which is bent out from the general plane of the ski so as to, provide a certain am unt sprinsiness for taking up the weight of the skier...

T the support1is cur d a yoke 22 and to this yoke are secured an le p ates 25; The plates 25 are secured to the, yo y means of screw connectors 23 and elongated holes 24 in the yoke So as to be adjustable. To the upper ends of the plates 25 are secured actuating: members in the form of squares 26 which, as the sp i 2!, are to be used for curved skis and then are djusted to slight y project above the. feed table. one to three mil imeters) the latter being formed by plates 21, 28 secured to the frame. l-and provided with openings for the squares 25.

The operation of the machine isas fol ows, it being assumed at first that it will be usedfor curved skis. y

The spring 2 l is tensioned by means ofthe nut 26 so that the dressing table 5 projects above the plane of the reed table, the exact amount depend- D ing on the curvature of the ski. The set screw 19 will then no longer engage with the upper flange of the beam and the dressing table is thus free to move downwards against the load of the spring 2i until the set screw l9 engages with the upper flange of the beam I and limits the downward movement, when the dressingtableis flush with the 'feed table.

Also the squares or actuators 26 are adjusted so that they project above the plane of the feed table, the amount depending on the curvature of the ski.

The dressing band 4 is assumed to move in the direction indicated by the arrow in Fig. 2 and the ski is assumed to be fed to the machine in the direction from left to right in the same figure, the ski entering the machine with the hind end foremost. When the machine is started the dressing table 5 is tilted over to the left in Fig. 2. When the ski engages with the dressing band and the finishing operation begins the dressing table is tilted back to its normal position. This movement protects the dressing band as this otherwise is liable to break, particularly if the ski is roughly brought into contact with the dressing band. The dressing table is also depressed by reason of the ski depressing the left actuator 26 which further serves to protect the dressing band and prevent it from breaking. As the ski passes along the feedtable the actuators 26 and also the dressing table rise so that the dressing band will always be in contact with the runner face of the ski in spite of the curvature of the latter.

When the machine is to be used for finishing skis having plane, not. curved runner faces the the frame for tilting movement and having ar rounded upper face substantially flush with the upper face of the feed table, means for yieldingly supporting the dressing table, means for fixing the dressing table in a non-yielding position,

drums rotatably mounted in the frame and an endless dressing band mounted on and passing over the drums and the dressing table.

2. Sand papering machine comprising incombination a frame having a feed table, a support mounted in the frame for sliding movement therein in a direction substantially at right angles to the plane of the feed table, a dressing table associated with the feed table, mounted on the support for tilting movement and havin a rounded upper face substantially flush with the upper face of the feed table, a lever swingably mounted in the frame with one end fulcrumed to the support, means for fixing the lever in a position relatively to the frame which prevents yielding of the dressing table, a spring for setting the lever in a position permittingyielding movement of the dressing table against the load of the spring, drums rotatably mounted in the frame, and an endless dressing band mounted'on and passing over the drums and the vdressing table.

3. Sand papering machine comprising in com bination a frame having a feed table, a support mounted in the frame for sliding movement therein in a direction substantially at right angles to the plane of the feed table and having a groove at the end adjacent the feed table, a dressing table associated with the feed table, mounted on the support and having a ridge fitting into the groove of the support for permitting tilting movement of the dressing table, a rounded upper face on the dressing table substantially flush with the upper face of the feed table, a lever swingably mounted in the frame with oneend fulcrumed to the support, means for fixing the lever in a position relatively to the frame which prevents yielding of the dressing table, a spring for setting the lever in a position permitting yielding movement of the dressing table against the load of the spring, actuating members projecting through the feed table on both sides of the dressing tabl and adjustably secured to the support, drums rotatably mounted in the frame, and an endless dressing band mounted on and passing over the drums and the dressing table.

4. Sand papering machine comprising in combination a frame having a feed table, a support mounted in the frame for sliding movement therein in a direction substantially at right angles to theplane of the feed table, elastic means for urging the support in the direction towards the feed table, a dressing table associated with the feed table, fulcrumed on the support for tilting movement thereon and having a rounded upper face substantially flush With the upper face of the feed table, an actuating member projecting through the feed table at least on one side of the dressing table, secured to the support and operative when depressed to depress the dressing table, drums rotatably mounted in the frame, and an endless dressing band mounted on and passing over the drums and the dressing table.

5. Sand papering machine comprising in combination a frame having a feed table, a support mounted in the frame for sliding movement therein in a direction substantially at ri ht angles to the plane of the feed table and having a groove at the end adjacent the feed table, a dressing table associated with the feed table, mounted on the support and having a ridge fitting into the groove of the support for permitting tilting movement of the dressing table, a rounded upper face I on the dressing table substantially flush with the upper face of the feed table, drums rotatably mounted in the frame and an endless dressing band mounted on and passing over the drums and the dressing table.

BROR. OTTO WESTMAN.

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