07-05-2021, 12:49 PM
So, is the description below the usual 4-speed crash box, or this one, I wonder?
"A Gearbox with a Silent third Speed
A Résumé of Recently Published Patent Specifications
MEER name of Sir Herbert Austin, K.I3.E., appears , in patent No. 343,183, which describes a neat and compact gearbox of the kind in which a,.1. eccentrically mounted sleeve with Internal and external teeth is employed.
A is the driving shaft, which is bored out to form a bearing for the sliding shaft (D), and is provided with extetnal teeth (aI) and internal teeth (a). B is th•I driven shaft and is in the form of a sleeve with internal splines (b), which engage with the splines of the sliding shaft (D). Shaft D always revolves with the driven shaft, and has keyed to it the wheels f 'and f1 It is also provided with teeth (d), which enable it to engage with the teeth (a) of the driving shaft to give top gear.
The wheel (0.) has• internal teeth '(fl), which can, when shaft D is moved to the right, engage with the external teeth (Cl) of the eccentrically mounted sleeve ©. Both the sleeve © and the gearwheel (e) of the layshaft are In permanent engagement with the teeth (al) of the driving shaft (A).
The layshaft carries a wheel (e), which is keyed to it, and is splined for the sliding sleeve, which carries two gedrs (e2 and e3). The gears H and G are focmed integral with one another and are slidably mounted on a shaft; they are employed only for the reverse.
The operation of the gear is as follows
First Gear.—e and at in constant engagement, and e5 into fl.
Second Gear.—e and al in constant engagement, and e2 into f.
' Third Gear.—c in constant engagement with al, and f2 into O.
Fourth, or Top, Gear.—d engages with internal teeth (a).
Reverse.—e and alin constant engagement, G into e2 and H into f."
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It is from here:
http://archive.commercialmotor.com/artic...hird-speed
"A Gearbox with a Silent third Speed
A Résumé of Recently Published Patent Specifications
MEER name of Sir Herbert Austin, K.I3.E., appears , in patent No. 343,183, which describes a neat and compact gearbox of the kind in which a,.1. eccentrically mounted sleeve with Internal and external teeth is employed.
A is the driving shaft, which is bored out to form a bearing for the sliding shaft (D), and is provided with extetnal teeth (aI) and internal teeth (a). B is th•I driven shaft and is in the form of a sleeve with internal splines (b), which engage with the splines of the sliding shaft (D). Shaft D always revolves with the driven shaft, and has keyed to it the wheels f 'and f1 It is also provided with teeth (d), which enable it to engage with the teeth (a) of the driving shaft to give top gear.
The wheel (0.) has• internal teeth '(fl), which can, when shaft D is moved to the right, engage with the external teeth (Cl) of the eccentrically mounted sleeve ©. Both the sleeve © and the gearwheel (e) of the layshaft are In permanent engagement with the teeth (al) of the driving shaft (A).
The layshaft carries a wheel (e), which is keyed to it, and is splined for the sliding sleeve, which carries two gedrs (e2 and e3). The gears H and G are focmed integral with one another and are slidably mounted on a shaft; they are employed only for the reverse.
The operation of the gear is as follows
First Gear.—e and at in constant engagement, and e5 into fl.
Second Gear.—e and al in constant engagement, and e2 into f.
' Third Gear.—c in constant engagement with al, and f2 into O.
Fourth, or Top, Gear.—d engages with internal teeth (a).
Reverse.—e and alin constant engagement, G into e2 and H into f."
*****************************************************************
It is from here:
http://archive.commercialmotor.com/artic...hird-speed