US751055A - Camille contal - Google Patents

Description

PATENTED FEB. 2, 1904.

c. GONTAL. RATCHET SCREW KEY.

APPLICATION FILED 0OT.15, 1903.

NO MODEL.

@22m/WF @En u -TU L s PETERS co., vHoTou-r UNITED STATEs Patented February 2, 1904.

CAMILLE CONTAL, OF PARIS, FRANCE.

' RATCH ET SCREW-KEY.

SPECIFICATION forming part of Letters Patent No. 751,055, dated February 2, 1904.

Application led October l5, 1903.

To all whom, it m//y/ concern:

Be it known that I, CAMILLE CoNTAL, engineer, a citizen of the Republic of France, residing at 186 Boulevard Pereire, Faris, inrthe Republic of France, have invented certain new and useful Improvements in Ratchet Screw- Keys, of which the following is aspecilication.

This invention relates to a ratchet screwkey for screwing and unscrewing nuts or for turning divers objects in either direction; and it has for its object to so construct a key of this character that it will be simple, strong, and easy to lubricate or clean as tothe parts subjected to friction. The said key comprises a stem arranged in the form of a tool or adapted to receive a tool and provided with an eXtension around which are loosely mounted a ratchet-disk and a head arranged in the form of a handle or adapted to receive a handle. On the said key is also mounted a spiral spring which presses the said head against the ratchetdisk and both the head and disk against the end of the stem, the contact-faces of the said head and of the said stem being provided with teeth inclined in opposite directions meshing with the corresponding' teeth of the ratchetdisk in the same manner as pawls. Y The end of the stem, thel ratchet-disk, and the head are also provided with means to rigidly connect the ratchet-disk either with the head or with the stem or with both at the same time. In the first case by the oscillating movement of the head moving' and coacting with the ratchet-disk the pawl of the stem is operated in one direction, to screw, for instance. In the second case the oscillating movement of the head with its pawl causes the ratchet-disk moving and coacting with the stem to turn in the opposite direction, to unscrew, for instance. In the third case the head moves and coacts with the stem in both directions.

The accompanying drawings .show by way of example one form of carrying out the present invention.

Figure 1 is an elevation of the key, the operating-handle being brought inward alongside -(see Fig. 1) or only with the crown 5.

the key. Fig. 2 is an end view of the key,

Serial No'. 177,175.A (No model.)

the tool being withdrawn from the stem or from the bore in the same. Fig. 3. is a longitudinal section of the key, the handle being in its operative position. Fig. 4 is a transversal section on the line A B of Fig. 3. Fig. 5 is a part elevation showing the universal joint used.

On an extension of reduced diameter 1 at the end of a hollow stem 2 a ratchet-disk 3 and a tubular and handled head 4, both of which arefree to turn and slide, are loosely mounted, a toothed crown or pawl 5 being also xedly mounted on the said extension. The lateral faces of the ratchet-disk 3 are provided with teeth 6 and 7, which mesh, respectively, with the teeth 8 and 9, formed on the head 4 and on the crown 5, the said teeth being inclined in opposite directions, as shown in Fig. 1. Between the bottom of the head 4 and a washer IO, held on the extension I by a pin 11, is located a spiral spring 12, which tends to press the head 4 against the ratchetdisk 3 and the said disk against thecrown 5. Two holes 13 are provided in the head 4 to allow of putting the pin 11 in place.

The periphery of the ratchet-disk 3 and of the two pawls 5 and 8 is angular and is surrounded by a slidable ring 14 of corresponding shape. The width of the said ring is such that it is capable of covering at the same time both the edges of the disk and those of the two pawls. The said ring can be moved so as to connect the disk 3 only with theI hetl 4 ee Fig. 3.) Studs 15 limit the movement of the ring 14 in both directions. the said ring in each position in which it is put by hand, a flat spring 16 is housed in a mortise of the ring and bears against the periphery of the disk 3, thus exercising suflicient friction to keep the ring in place.

In the square oriiice of the bore 2 there may be located a square rod 17, onto which divers tools may be adapted. The drawings show a tool capable of fitting onto nuts and consisting of a tube 18, one end of which is made square to take onto the rod 17 and the other end of which is opened out in the form of a In order to hold polygonal cap corresponding in shape to that of the nut onto which the cap or key is to take.

Instead of only a square rod 1'7 there may be inserted in the bore 2 a square rod 19, (see Fig. 5,) connected by a universal joint to another square rod 21, onto which there may two openings 26 and 27 in the head 4, the latter opening 27 being extended by a slit 28, through which the flat part 24 can be passed. Then the handle is located in the two'openings 26 and 27, as shown in Fig. 3, it cannot pass out through the slit 28, while being easy to operate to give either a reciprocating or continuous rotary movement to the head 4. To bring the handle alongside the screw-key, as shown in Fig. 1, it is slid in the openings 26 and 27 until the iiat part 24 can be passed out through the slit28, after which the curved part 25 is brought intothe opening 26 and the handle is turned parallel to the stem 2. Thel screw-key is thus rendered compact.

Instead of a square rod 17 there may be usd tools, such as 18, having a square end which takes directly into the orifice of the bore, or any other suitable fixing means may be used.

I claim- 1. A ratchet-key for screwing, unscrewing, and the like, comprising a stem having an eX- tension, a ratchet-disk loosely mounted on the said extension, pawls coacting respectively with the stem and with the head and engaged by the said ratchetdisk, a spiral spring mounted on the said extension to hold the ratchet-disk and the pawls in mesh, and means for rigidly connecting the ratchet-disk either with one of the pawls, or with the other pawl, or with both at the same time.

2. A ratchet-key comprising a stem having an extension, a ratchet-disk and a head loosely mounted on the said extension, pawls formed on the inner faces of the stem and of the head, a spring holding the ratchet-disk and the pawls in mesh, and a movable ring for causing the ratchet-disk to coact with either one or the other pawl or with both at the same time, the said ring having, the same as both the ratchetdisk and the pawls, angular guide-faces.

3. A ratchet key comprising a stem, a ratchet-disk, a hollow head, pawls formed on the stem and on the head, a spring to hold the ratchet-disk and the pawls in mesh, means for connecting the ratchet-disk with either pawl, in combination with an operating-rod bent at one end, a head at each end of the said rod, a reduced part on the rod, two openings in the wall of the head and inV which the rod is slidable, and a slit connecting one of the said openings with the edge of the head and through which the reduced part can be passed, in order to allow of the operating-rod being brought alongside of the screw-key.

4. A screw-key comprising a stem, a ratchetdisk, a head, pawls formed on the stem and on the head, a spring to hold the ratchet-disk and the pawls in mesh, means for connecting the ratchet-disk with either of the pawls, in combination with a fork arranged to fit on the end of the stem, another fork arranged to receive a tool, and a spider connecting the two forks in the same manner as a universal joint.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

CAMILLE CONTAL.

Witnesses:

AUGUSTUS E. INGRAu, MAURICE RoIX.

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