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Post by humpyboy on Jan 15, 2014 11:50:29 GMT 10
Hi AKS I'm intrigued as to how this thing works, it looks to me that you screw that round thing on top to push the front cup back onto the ball? is this correct.
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Post by akeepsake on Jan 15, 2014 12:55:53 GMT 10
Thanks cobber and Jenno.......now to find my punch set!!!! Interesting Cobber have studied the "Jennison files" and in the brochure it says tow hitch Jennisons patent design So thought there may be a patent somewhere could have been before the war??? Having another look at the pictures above mine has a safety catch that flips over ant the one in the pick has a grease nipple where mine hasn't!! Little details I know! Here is a worms eye view!  |
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Post by akeepsake on Jan 15, 2014 13:06:11 GMT 10
Hi AKS I'm intrigued as to how this thing works, it looks to me that you screw that round thing on top to push the front cup back onto the ball? is this correct. Giday Humpyboy. The picture I just posted may help . From the worms eye view you can see the back cup pivots and as you wind up the knurled disk on the thread it tightens onto ball which is sandwiched between fixed front cup and sits on top cup then the t piece behind acts as a lock then a locking bracket flicks over. Hope that makes sense!  |
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Post by humpyboy on Jan 15, 2014 13:24:21 GMT 10
As I thought but the other way round  |
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Post by cobber on Feb 21, 2014 19:01:33 GMT 10
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raym
Full Member
Posts: 128
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Post by raym on Mar 21, 2014 23:25:39 GMT 10
The ? C. Forbes coupling on a "Crestline" van.... See it Here Cobber. J C Forbes. Jack Forbes manufactured caravan chassis, trailer, horse float and stock fencing. He made chassis for many SA caravan manufactures including Rowe vans Broadway and many others. He had couplings made with his name cast on them. His business address was 11a Royce Avenue, Croydon Park, South Australia. Raym |
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Post by cobber on Mar 22, 2014 16:40:04 GMT 10
Thanks Ray  Neil'nCheryl might like that bit of info too. Cobber. |
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Post by bigjoe47 on May 20, 2014 18:11:59 GMT 10
Thank you for the S J Brown coupling Frankie, here is an add. for the same one.  And here is another hydraulic override coupling that incorporates a hand brake and ratchet, make not known...... yet.  Cobber. |
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Post by cobber on May 23, 2014 13:19:00 GMT 10
Trailezy couplings,  The patent application for these couplings can be seen HEREThey were originally called 'Traileasy' couplings and were originally made in a bronze alloy, they were made from about 1946 up into the 1980s Cobber. |
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Post by Koala on Jul 25, 2014 10:04:11 GMT 10
Found this coupling on a Franklin Van while holidaying at the Minlaton Caravan Park in SA. Unfortunately I did not take a photo of the van itself but expect that it is later than my Franklin 69 Freeway as it has a hand brake where my van does not. Interestingly my coupling has `Franklin Caravans' cast into it whilst this one I found has `Franklin Engineering' in the casting.
 I expect that the shock absorber has been added aftermarket at some stage as the welding is quite poor.
Koala
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Post by cobber on Jul 25, 2014 10:51:49 GMT 10
G'day Ken, That's another interesting solution to a percieved problem aye?...meant to reduce the jerk sometimes experienced as the van brakes are released I suppose .... I wonder if it worked? The other Franklin couplings on this thread can be [url= vintagecaravans.proboards.com/post/99765]seen here[/url] Cobber. |
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Post by cobber on Aug 24, 2014 12:12:39 GMT 10
Dymwood coupling on a Franklin van you can see HERE There is another Dymwood override coupling, slightly different HERE that probably has the same method of locking the ball, you need to look at the patent application to see how that is achieved.. I did anyway    The patent application for the coupling only is HERE ... ( can't find one for the override brake part...... yet ) Cobber. |
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Post by cobber on Oct 12, 2014 16:07:03 GMT 10
Carapark override brake and coupling on a 1953 Carapark JuniorShowing a different coupling to the one fitted on this Carapark brake and this one too I doubt that all three COUPLINGS are actually Carapark couplings..... what do YOU think   It appears as though Carapark override brakes don't have a handbrake on 'em  ? Cobber. |
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Post by cobber on Oct 28, 2014 17:21:12 GMT 10
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Post by cobber on Nov 9, 2014 12:59:25 GMT 10
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Post by akeepsake on Jan 1, 2015 8:45:15 GMT 10
 Coupling off a 55 Alexander |
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franni
Junior Member
Posts: 65 
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Post by franni on Feb 15, 2015 12:03:30 GMT 10
B&B trailers UK, photos of franni's Pearman Briggs Safari coupling    the company was started in 1946 by Mr Bird and Mr Billington and was called B&B both were ex Automotive Products employees who started their own precision engineering company in Leamington Spa. ……the first major batch of caravan chassis was sold to Pearman Briggs who made Safari caravans
www.thomson-caravans.co.uk/advice/chassis/alkoukhistory.htm
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Post by cobber on Feb 15, 2015 14:10:57 GMT 10
Thanks franni for posting those beaut photos of your B & B coupling, and the extra information and the link to Thompson caravans... it's all grist for the mill I can't find the actual patent application for that one ( is the number 1031264 ? ) but we do have an improvement dated 1952, see it if you click on the following link ... They made a few 'improvements to tow coupling' and you can see them if you click HERE I have photos of another B & B coupling fitted to an Australian home made caravan that I've been meaning to post  Similar to yours but.... different.   An entirely different override brake.  There are a couple of other B & B couplings fitted to Aussie vans HERE (when we didn't know as much as we do now) and THIS ONE and HERE ( this one gives us a few good links to even more information contributed by our UK member 'UK Brian , who's helpful web site I notice you have found  ) Cobber. |
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franni
Junior Member
Posts: 65
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Post by franni on Feb 15, 2015 19:40:46 GMT 10
thanks Cobber. i reckon the number is 1034264
franni
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Post by cobber on Feb 16, 2015 18:48:01 GMT 10
Thanks franni, my old eyes aren't as young as they once were, neither is the rest of me That patent number leads us to the application that tells us you have a rather sophisticated override brake arrangement, it has a hydraulic dampening system built into it. I don't think we have see a similar system on the forum previously, although there was a a home made attempt to achive the same effect, you can see it HERE I imagine you have already discovered that by removing that little black plug on the top of it, was it full of hydraulic fluid ? You can see the patent application if you CLICK HERE Cobber. A correction to the above statement that we haven't seen a similar dampening system on the forum previously.... we have. The S. J. Brown override brake you can see if you CLICK HERE and HERE had a dampener built into its hydraulic braking system ...... we live and learn. |
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franni
Junior Member
Posts: 65
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Post by franni on Feb 16, 2015 20:31:41 GMT 10
thanks again Cobber, your knowledge and willingness to share it is invaluable. we know nothing about tow couplings. to be honest i just thought you hooked up and drove of into the sunset. so much to learn, but hopefully plenty of time to do so.
it wasn't your eyes that were the problem, i had to go out to the van to check and even then it was hard to read. a bit too much paint i reckon. nothing to do with my eyes being past the 3 score and 10 ;)this whole caravan restoration is a huge learning curve. just wish i didn't have a forgetting curve to match.
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Post by cobber on May 31, 2015 20:21:48 GMT 10
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Post by phoenixrising61 on Jun 4, 2015 20:00:45 GMT 10
This coupling is currently on our 1966 Franklin Premier. There are no identifying brands on the coupling anywhere so we are assuming it is a Dymwood as per the picture on page two of this thread. Except this one has two handles to use. Attachment DeletedAttachment DeletedAttachment DeletedIF anyone had any information about the brand that would be awesome. Cheers, Andrew |
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Post by cobber on Jul 4, 2015 16:45:42 GMT 10
G'day Andrew, Sorry for the delay in replying to your post  The logo on your coupling is similar to the one we have HERE ... we call it an S.L. Coupling, we may find out who S & L were one day Cobber. |
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Post by cobber on Jul 4, 2015 17:07:30 GMT 10
Here we have another override coupling designed to operate hydraulic brakes. It is on a Franklin van re-badged as Jennison Pathfinder sighted by Stephen&Julie, you can see the van if you click HERE and there is some discussion about it in the following posts.  My old late seventy year old eyes are having trouble reading the brand  can somebody help please. Nice looking jockey wheel set up too Cobber. |
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Neil'nCheryl might like that bit of info too.
?
can somebody help please.