US2250305A - Turnstile - Google Patents

Description

y 941 w. .1. KENNEbY 2,250,305

' 'TYURNSTILE Filed Oct. 11, 1939 Patented July 22, 1941 ATENT orric TURNSTILE William J. Kennedy, Hollis, N. Y.

Application October 11, 1939, Serial No. 299,019

7 Claims.

lVly invention relates to turnstiles of the droparm type, in which the arms, as they are successively moved out of barrier position by passing patrons, drop downward by their own weight, assuming a vertical position at the rear of the stile, from which they are raised by power, as they approach the front of the stile and again come into passage-barring position.

The common practice is to raise and lower the arms by having them ride up and down inclined portions of a fixed, curved or circular track, as they are rotated in the operation of the stile. In addition to being crude and noisy, this method is objectionable for other reasons, such for example, as the awkward bulkiness given the stile by various forms of the track employed, which, in many instances, is exteriorly located and fully exposed to view, making it impossible to give the machine a trim, well-proportioned appearance,

attractive to the eye of prospective purchasers or users.

To avoid the above mentioned and other objections, I provide a simple, effective and inexpensive means for raising and lowering the arms and mount the same within the head casing of undue wear, without danger of damage suits from patrons claiming soiled and torn clothing from the use of the machine.

Differing from the ordinary drop-arm turnstile, the arms of the present machine are under complete regulation and control, both in being raised and lowered and the weight of the downwardly moving arms is utilized to assist in raising the arms that are being moved upwardly.

The arm raising and lowering mechanism is in the nature of a transmission assembly, by which the rotary motion of the stile is converted and transmitted to the arms to oscillate the same, while rotating, through an arcuate path of ninety degrees.

This transmission assembly, in the present emeccentrioaily disposed to the turning axis of the stile, so that as the stile is rotated, the throw of the eccentric connections, transmitted to the arms, gives them the required up and down motion into and out of barrier position.

Other structural features and advantages of the invention, not specially mentioned above, will appear from the detail description that follows.

The accompanying drawing will serve to illustrate an embodiment suitable for carrying the invention into effect but I do not wish to be understood as intending to limit myself to the exact form or details shown, as various changes may be made therein without departing from the scope of the invention, as defined in the appended claims.

In the drawing- Fig. 1 is a view in elevation of a turnstile constructed in accordance with my invention, the lower portion of the pedestal or support being broken away and the arm at the center shown in barrier position.

Fig. 2 is a horizontal section on the line s ---s of Fig. 3.

Fig. 3 is a vertical section on the line s s of Fig. 2.

Referring now to the drawing, I represents the usual supporting pedestal of the turnstile, 2 the head casing thereof mounted on roller or ball bearings 3, to rotate about an axis in the form of a spindle 4, non-rotatably secured to the pedestal by a cross pin 5. The head casing is provided with a removable cover plate 2*, to give access to the mechanism therein.

The barrier arms 6 are pivotally mounted in equi-spaced relation in the head casing. In the arrangement shown, the pivot pins 1 are hori zontally disposed and secure the arms between parallel plate extensions 8, 8 of the head casing, by which the arms are limited to motion about the pivots in the plane of the turning axis 4 of the head.

Within the head casing there is a transmission assemblage, by which the rotary motion of the stile is converted and transmitted to the barrier arms to oscillate them, while rotating, through an arcuate path of ninety degrees, as required in the drop-arm type of stile, to move them into and out of barrier position.

The preferred form of this transmission assemblage or system, consists of a separate link connection 9 from each arm 6, at a point [0, above its pivot l, to a fixed axis, shown as a spindle I l, eccentrically disposed to the turning axis 6 of the head.

The links 9 may be connected to the barrier arms in any suitable or well known manner but are preferably pivoted thereto, as indicated at I2, the pivot pins extending parallel with the barrier arm pivots l.

At the opposite ends, the links have pivotally attached thereto straps or bands I3, which encircle the fixed eccentric spindle H and are free to turn about the same as the head casing is rotated.

The operation will be obvious from the foregoing. The throw of the eccentric linkage is such as to move the arm, shown dropped vertically downward at the left of Fig. 3, to barrier position, shown by the arm at the right, during a half revolution of the turnstile head and return the arm to vertical position, as the head completes the revolution and, as there are four arms, they will be successively moved into barrier position on each quarter turn of the head, which is the usual movement for a complete turnstile operation.

Having described my invention, I claim:

1. In a drop-arm turnstile provided with a head casing to which the arms are pivoted to have independent up and down movement, an actuating assembly for the barrier arms mounted within and rotated by the head casing, the said assembly turning about an axis eccentrically disposed to the turning axis of the head casing and having a separate connection with each of the barrier arms through which motion is imparted when the turnstile is operated to successively move the arms into and out of barrier position. 2. A drop-armturnstile, as defined in claim 1, in which the separate connection to each of the barrier arms is made in eccentric relation to the pivotal axes of the arms.

3. A drop-arm turnstile, as defined in claim 1, in which the separate connection with each barrier arm is made by a link pivotally connected at one end in eccentric relation to the turning axis of the head casing and similarly connected at the other end in like relation to the pivotal axis of the arm.

4. A drop-arm'turnstile, as defined in claim 1, in which the actuating assembly consists of a link connection between each barrier arm and an eccentric turning axis common to the several links, the connection to the barrier arms being in eccentric relation to the pivotal axes of the arms.

5. In a turnstile, a rotatable head casing, a plurality of equi-spaced barrier arms pivoted at their inner ends to the head casing and separately connected to a common eccentric by which they are given motion about their pivots as the head casing is rotated causing them to successively move into and out of barrier position.

6. In a turnstile, a rotatable head casing, a plurality of equi-spaced barrier arms pivoted at their inner ends to the head casing and separately connected at a point above and adjacent their pivots to a common eccentric spindle by which they are given motion about their ivots as the head casing is rotated causing them to successively move into and out of barrier position.

7. In a turnstile, a rotatable head casing, a plurality of equi-spaced barrier arms pivoted at their inner ends to the head casing and freely movable about their pivots and link connections from the arms at points adjacent their pivots to a common fixed spindle eccentrically disposed to the turning axis of the head casing by which the arms are successively raised and lowered into and out of barrier positions as the head casing is rotated.

WILLIAM J. KENNEDY.

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